HI, I'm new here but have been lurking for awhile. I recently decided to sell my 8 year old gulfstream b touring cruiser, lots of problems and no longer suited what i wanted to do. Bought a 2013 chevy express passenger van and have installed a kitchen cabinet and built and installed a bed, i've pulled out the seats and tacken out the heavy beam runners the seats attached to, laid down plywood, and put down an indoor outdoor type carpet. As i live in texas and travel alot around the state and thru the southwest us i need to decide on an air conditioner. I am camping in state parks and rv parks so 98% of the time i have hookups. Question, do you think i would be better suited with a portable air conditioner or a window unit, and if a window unit the best way to install in back drivers side door.