Wow 50 pounds for a week hunt is truly light. Must be freeze dried food all the way and not a heck of a lot of stove fuel. I did a super cub drop off bear hunt once but I think we (2 of us) each carried about 80 - 90 lbs in, planning to use up food fuel and water. Sure handy to have 3-4 gallons of safe water from the get go using a folding jug - if you have the option. Saves time, fuel. I'm glad I only weigh about 160 - the pilots let me take more stuff than the over 200 guys- & I like to eat a LOT.
Dave what is a Thermocell ?
Regarding water, one way to save fuel is to have one of those Katadyne filters - but they are expensive add some bulk and its another piece of clutter.
Dave part of the question is how heavy is your equipment? There are very light binocs and there are real heavy ones. Same for cook kits, tents, sleeping bags etc. You could end up with vastly different total weights depending on the individual gear selected.