Okay – I scrutinized your list….
Two Big questions:
Where are you gunna go camping? And what time of year?
Also – – – Are there lots of bugs? Is there dependable water? Do you need any kind of bug shelter?
1) Ditch the water filter. 15 ounces?!?!? Take Potable-Aqua of KLEAR-Water.
2) Hide the car keys and house keys in your car. Liberate yourself!
3) Toilet paper?!? You'll be fine without it.
here's a link:
http://www.backpackinglight.com/cgi-bin/backpackinglight/toilet_paper_free.html
4) Two pair of underwear? You'll be fine with just one. My personal record is 35 days, without changing my undies!
5) 1 ounce bic lighter? THe tiny kind is only 1/2 ounce! The tiny (and cute) version is available at most gas stations.
6) You have SIX separate stuff sacks listed. You could easily go down to just one, for your food. You already have a waterproof pack, so you are all set!
7) Ditch the camel-back (9 oz). Replace it with a 1.2 ounce 1.5 liter platypus. Or, just a soda bottle. Do you REALLY need both a gator-aid bottle AND a Camel back?
Also – Be aware, you do NOT truly NEED a hydration tube system. THis is purly a "want" item. Campers went out for most of history without 'em. And – THey are surprisingly heavy.
(also, platypus does have a hydration tube attachment, so if you really WANT it…)
8) Ditch the gerber multi tool. What do you need it for, really? A single edge razor weighs 0.1 oz.
9) Do you need the bivi with such a warm sleeping bag and a full tarp? (saving 6.8)
10) Do you need the BAG liner with such a warm sleeping bag and a full tarp? (saving 10)
When totaling up the list above it comes to ruffly 50 ounces of extraneous stuff that you could EASILY liberate from your list. That's over 3 pounds!
ALSO:
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Are you going stove-less? I don't see any cook gear.
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