RE: Backpack List....OK??
Wal-mart has some cheap backpack type LED laterns that take3 AA batteries and put out a decent amount of light. I picked up a few for the home, when the power goes out. Also, I've read about some real light weight lights at Radio Shack, Brinkman GO-LED item 809-3054-1/63-156.
65 lbs. is a lot to hump, I'd look at ways to lighten the load.
Might want to add a candle, firestarters, matches, and Advil to your list.I suggest a back-up knife also.
Bugs.