Good job on keeping the toiletries volume and weight down.
To toiletries or FAK, I’d add a few tablets each of Benadryl, Imodium, Tylenol, Advil.
Paracord is the right cordage for a few things, but not many, IME. I bring 25-foot length of 130-pound dacron fishing line which is MUCH smaller and lighter. It can serve as an emergency shoe lace. Or as really heavy-duty sewing thread.
Polypro instead of tyvek. Send yourself another piece every 500 miles.
Kind of heavy on clothes. Would you ever be wearing ALL of those at once? If not, you have too many clothes. And even on a windy pass at 11,000, you’d be hiking, so you wouldn’t be so bundled up. And when you’re in camp, you have the sleeping bag to use. Heck, in a pinch, you can wear the sleeping bag as a jacket under your rain layer or a trash bag.
Warm gloves and sun gloves? Totally get the sun gloves, because I’ve baked the back of my hands, even with a good base tan, during a week in Baja. For the occasional cold hands, you can use the sun gloves and if you need more insulation, use the second pair of socks.
Also, I assume several of the warm clothes are only for the high-Sierra portion and will be mailed in and then sent back home.
The PCT isn’t exactly a trackless wilderness where you’re triangulating off of distance peaks. So a mini button compass tucked in your FAK or repair kit would suffice if you get turned around on a cloudy mountain top.
Deuce of Spades is an amazingly light trowel but a found stick is even lighter. But HYOH.
You’ve got a mini-Bic in your cook kit. Add one to your repair kit or FAK. This is about the only item (and possibly water treatment) where I recommend some redundancy. Get bright colors.
+1 on the SAK Classic
Skip the rain cover. Add a trash-compactor plastic bag for those items that need to stay dry and use it INSIDE your pack.
That’s a lot of electronics, but that’s a generational thing.
And the electronics get charged, when? When you’re “in town”? The PCT ain’t the AT, and there’s not much “in town”. If you want tunes and GoPro capacity, then something that MAKES power instead of something that STORES power will be needed. Play with your proposed combo on some repeated day hikes (without recharging between hikes) to get a sense of how many trail-days you’d have.
Are you planning on 40-mile days and need to do lots of miles after dark? Because that’s a lot of headlamp for a summer trip with long days/twilight periods. But if you want a lot of light, a Zebralight H51 (or whatever the current model is), is 2.0 ounces with its single lithium AA battery. Or an e+lite.
You need to add a repair kit. Sturdy sewing needles (there’s an assortment at the supermarket for $1.79), a mix of thread sizes. Short lengths of various tapes (for your gear and for your body). Safety pins. Extra button. Enough cordage (like that 130-pound-test dacron) to lash something back together or to secure stuff to your pack. 1-inch square of 1000-grit sandpaper (removes burrs and sharpens your knife).
Between the dessert heat and the high-Sierra sun, I’d consider a Chrome Dome. I feel about 10-15 degrees cooler underneath. 8 ounces, I think. Mail it home once in Oregon.