I just compared your list with my own, which is also for high up in the Winds. My base weight is 5 lbs. lighter than yours, even with a heavier tent (GG/Tarptent Squall Classic), and as a somewhat arthritic old lady who always has been a cold sleeper, I need plenty of creature comforts! Most of these items have been mentioned before, but here's my take.
10-oz. hiking shirt–that's awfully heavy, more than I have for a lightweight wicking baselayer top (Capilene 2) plus lightweight windshirt (Montbell UL). Use your lightweight baselayer top as your hiking shirt (spray it with permethrin which will last through several washings). Leave the 10-oz. behemoth at home. You want something next to your skin that wicks and also provides some insulation when layered under outer clothing.
Do you really need those extra heavy socks and liners? I find one pair of medium-weight merino wool socks (2.3 oz. per pair) to work just fine, even with my deformed and therefore blister-prone feet. They dry a lot faster than those heavy socks and liners, too.
I agree the Nanopuff is too heavy, and probably warmer than you need if you wear all your layers together around camp when it's cold (which you should be doing). I just switched from a Montbell UL Thermawrap to a Montbell Ex-Light Down, lighter and warmer. (Just be sure to keep it dry!)
Why extra underwear? Except for the spare pair of socks, the general principle is to take no more clothing than you would wear all at one time in the worst conditions you might encounter. Leave the extra underwear with a set of clean clothes in the car to change into when you get back to the trailhead. You can rinse out the underwear you're wearing and (if yours is quick drying–check out Ex-Officio) it will be dry in an hour, during which time you can go "commando" without hardship.
Dental hygiene: I use a folding travel toothbrush, 0.5 oz. Try baking soda instead of toothpaste–dentist recommended, multiple uses (deodorant, paste for itchy bug bites, antacid), no residue on ground or vegetation when you spit it out, far lighter than toothpaste. Since I have expensive bridgework to keep clean, I take "Glide" prethreaded floss–enough for a week, removed from its individual packages and put in a tiny plastic bag, doesn't even register 0.1 oz. on my scale. (It can also be used as sewing thread for repairs.) My total dental hygiene kit for a week is 1 oz.
I also can't sleep without a 2.5" air pad, but there are lighter (and less expensive) alternatives than yours. First, see if you can get by with a shorter (3/4 length) pad plus your pack under your knees. Instead of the Z-Lite, get a 1/4" thick Thinlight pad from Gossamer Gear and cut it to torso length (shoulders to just below hips)–lighter and less bulky, and extra insulation only where you most need it. Check the weight of your NeoAir plus CCF foam against the weight of various insulated air pads. With the POE Peak Elite AC (successor to their Ether Elite, recently reviewed by BPL), which is supposed to hit the market at the end of this month, you may not even need the extra CCF insulation–it will have twice the "R" rating of the NeoAir, weigh less than the NeoAir and cost less than half as much. (You could sell your used NeoAir for enough to pay for it!) I've been using a POE insulated air pad for 6 years (except for a brief and very unsuccessful struggle with the NeoAir) and really love it. Try it on a frosty night in your back yard to see if this pad is comfy for you and if you can get by without the extra CCF pad. Or check with Bender of Kooka Bay to see what he can do for you that would be warmer and lighter than the NeoAir plus CCF pad.
Take a smaller, lighter towel or at least cut yours in half!
Try to cut back on fishing tackle. With the Winds being a fisherman's paradise, fishing tackle is, of course, a true essential unless you really hate fishing! Use dry flies (which of course can be fished wet) instead of heavy lures. I've switched to a Tenkara outfit (more fun, IMHO, as well as a lot lighter–no reel) and my total fishing tackle including the frying pan (5 oz.) and plenty of extra flies and tippet comes to 13 oz. Unless you like fish poached or steamed in your cooking pot, you do need the frying pan if you're at or above timberline (no fires or use of wood for fuel allowed above 10,400 ft. in the Winds, at least in the Bridger Wilderness), but look for a lighter one. Mine is part of a GSI Bugaboo solo set and is aluminum and non-stick. Non-stick titanium would be lighter yet, but is harder to cook with (you have to keep moving the pan constantly on the stove burner or fire to spread the heat and not have a hot spot in the middle).
In most cases, I would never, ever cut back on my food hoping to catch fish–IMHO, that's a good way not to catch any! The Winds, though, are an exception, unless you're going to be in a very popular area with high fishing pressure (I wouldn't plan on catching any at Island Lake or Titcomb Basin). Also, your food for 7 days should be 6 breakfasts, 7 lunches, 6 dinners. Depending on how much fish you plan to eat, you could cut the dinners or breakfasts in half for part (not all) the meals you expect to eat fish. This will offset some of your fishing tackle weight.
Re cooking fuel, note the fire rules above. Where you're at lower elevations, use wood to save fuel carried, if you can find an existing fire ring. Thanks to the pine bark beetle, there's too much wood fuel at lower elevations (do be careful)!
I do take an Ursack because, thanks to arthritis and lack of skill, I can't throw at all–it's either an Ursack or a much heavier bear canister for me. Above timberline, most people hang from cliffs or one of those enormous boulders. Are you sure you weighed your Ursack correctly? Mine is 7.5 oz. The lighter version they make (Ursack Minor) is not bear resistant. Legally, in the Winds, you are supposed to hang (judging from the USFS diagrams, they don't care how as long as it's high enough) or use an approved canister. In other words, I'm illegal up there!
I would not nix rain pants up there because when it snows, as it inevitably will regardless of season, you're going to want dry legs! It partly depends on the exposure where you're going. Look for a lighter pair–yours weigh more than your jacket! Silnylon chaps or a silnylon kilt plus gaiters would be lightweight alternatives. My silnylon rain pants (men's large) weigh 3 oz. You really don't need breathable material for rain pants.
A pack cover will not keep your pack contents dry in heavy rain or if you slip and fall during one of the innumerable stream fords in the Winds. Stuff sacks aren't waterproof either (the closure isn't waterproof). Try a waterproof pack liner (2 mil plastic bag, use a "candy cane" closure to make it watertight), or use dry bags (with waterproof closure) for your sleeping bag and insulating clothing.
You mention an "e-lite"–if that's the 1-oz. Petzl e+lite, that's plenty enough for all your lighting needs! You can ditch the 3-oz. light listed farther down.
You don't need the day pack; just scrunch the compression straps way down on your Starlite, load up what you need and take off! You can lighten the Starlite a bit by trimming excess straps (be sure to try on for length over all your thickest insulating clothing first).
If you don't want to or, like me, can't ditch TP (medical reasons in my case), consider paper towel sections instead. They are tougher and far more absorbent than TP. Three 6" x 11" sections per day (more than enough) weigh 0.4 oz, or about 3 oz. for a week–half the weight of the TP on your list. Just be sure to pack it out!
By getting tiny dropper bottles and repackaging, you can get by with less sunscreen, bug dope, sanitizer, soap and other such items. They are available at BPL, Gossamer Gear or US Plastics (where you can get semi-transparent ones so you can see how much is inside!).
What are the extra batteries for, and why do you need them? By starting with fresh batteries in everything, you should last the trip. (I do take an extra set of camera batteries, but by using the "power saving" feature (shutting off the LCD screen and using the viewfinder), I can go a week or more on a single fresh set, even when (as often) I get carried away with photography!
Your cooking pot seems heavy; my solo pot is 2 oz. and my spoon is 0.3 oz. I drink tea out of my pot so don't need a cup.
As I did, so can you, too, cut another 5 lbs. without sacrificing comfort or safety! With 5 lbs. less, you very possibly could switch to a lighter pack (as MikeC suggests) for even more savings!
