No guts no glory. I agree with the 8 x 10. I myself would be carrying the large film format you can. Cut down on fancy lens Carry more film. A good wide angle, a medium tele and a compact zoom. Also the most stable tripod you can handle. My kit for an average shoot is three bags. 1 film, 2 light meter and other gear, 3 tripod. Oh then the camera.
What grain............................................. ...............
Oh sorry, I forgot you don't shoot Large Format
Large format Pat.
I agree that backpacking/hiking and photography are wonderful companions. However, the type and amount of gear that I take camping depends upon where I am going, how far I am walking, who I am going with, and how much opportunity there will be for contemplative photography. The things that often don't mix well with carrying bulky gear are companions who are not photographers and a fast pace.
Each to his own, but I would almost never take more than one camera with me on a serious hike. It might be 35mm, MF or LF, but I personally find it liberating to remove a few choices. That's part of the reason I go walking in the first place - to get back to some simplicity. Taking just a good rangefinder and a light tripod can be a very nice way to travel in the bush.