Don't carry more than 1 liter until you get past the 24th switchback, at which point 3 liters is about right for me.
I agree with the above comments about food. between 1500-2000 calories a day is all I want when hiking. Your appetite will wane the higher you get. Don't bring food with any moisture in it.
Instead of two packs, consider getting an ul pack that is less than 1.5 lbs. It will then double as your daypack.
you didn't mention what kind of mattress pad, but you can save a lot of weight there. Look for something that weighs less than a pound.
Your tent is heavy. Consider going without or with a ul tarp.
You aren't likely to need bottom thermals if you are bringing a 20 degree bag.
leave the extra batteries and cables at home for the camera. Like Steve said, take, but don't review on the trail.
gore-tex is way too heavy (and expensive). YOu can pick up Frog Togs for about $25. The jacket weighs about 7 ozs. They tend to last me for a good two dozen hikes and do an excellent job of keeping out the elements.
You didn't mention clothes, but I typically wear the same outer layer for 3-4 days. You can wash them in the river during the summer and quick dry clothes will dry out in no time in that arid air.
