With everything you have in the jeep, your space for emergency supplies my be very limited. BTW, I'd figure out a way to tie everything down so it won't fly about if you hit something or roll. Ratchet straps work well for tieing things down. A few "D" rings can be welded to the floor if needed.
I'd replace the hand saw with a large Bow saw and add a good first aid kit,a pry oe wrecking bar, a couple days food and water, maybe a tarp and sleeping bags or blankets, and a reasonable PSK just in case you have to spend a unplanned night or two out.