A lot has already been said. But I will just add to a few things. Cut your huge clothing list. The only duplicates (clothes that I am not wearing at the time) would be one pair of nylon pants, one nylon shirt, and one pair of underwear. Bring enough insulating clothing to keep you warm in the high teens, low 20's, but only one set. I would also get a 20 degree bag and try and keep it less than 3 lbs.