Go to a camping store and buy yourself a mosquito net, and a solar shower. Without power, and sometimes crap all water, it can be a nice creature comfort to have hot water every now and then.
As for flying... The van is pretty robust and simple. Listen to the guys that have been flying there. A handheld GPS to map safe routes, a normal map of the area to do the same, and as long as the AH and altimeter is working, then you will be fine.