Just my $.02 on power. For your needs I'd do a small solar system on the roof for your normal day to day needs like fan and charging electronics. 200 watts should be enough with an equal amount of battery storage. This will also run a small 12 volt fridge as long as it's an efficient one. Then have a small generator to run the microwave and ac occasionally. The panels can be mounted flat, yes they will gain more power if you tilt them, but as long as you park in the sun they should be enough without tilting Mount your generator on a hitch hauler or similar, preferably in a locking box. But make sure you can run it without having to move it as you'll need probably a 2000 watt generator to run the ac and you won't want to be constantly lifting that. You could even have the box made out of expanded metal, basically heavy screen material, so it could breath and stay cool.