I do some contract survey photography work on the road for large retailers. I've been sometimes getting horizontal and sleeping in my hatchback - mostly at Walmarts. I have a portable Ryobi battery powered fan that does fine. I try not to run the engine too much to heat and cool when the weather isn't being cooperative. Anyhow, I'm looking to step it up. I have experience with campers and converted a van in the past. This time, I'm looking to convert a mini-van with comfy sleep, mobility and low profile being my priorities. Walmarts imparticular don't seem to mind folks sleeping in their lots so I can bend a bit on the low profile.
All this in mind, I'm trying to decide between installing a small gas powered roof ac or just getting a generator and putting a portable ac inside the minivan. I want to emphasize that I will only be back there to sleep. If I go with the portable ac, the best spot for the generator would be on the roof (I assume). I'm also assuming there is a way to install it semi-permenantly under some plastic casing or something. And then run a cord to the ac inside the van. I'd rather not deal with venting the ac out a window every night so am wondering, as I consider all this, why not just vent though the floor - assuming I can find a good spot in the undercarriage to make a hole. Seems like it would be easy, avoid the hastle of venting through window nightly, avoid rain through whatever I have rigged-up through the window and it will be stealthier. I could also just move the generator to the roof nightly if needed - instead of keeping it there semi-permenantly. I guess that would avoid anyone messing with it when I'm not around.
Or do I just cut a big hole in the roof and install a tiny gas powered roof ac? Do some roof ACs come with extra outlets? ...Just for charging a phone or computer? Any suggestions on roof ACs if I go that route? Any suggestions on portable ACs if I go that route? Generators? Is installing an ac on a minivan roof a bad idea? Any input on a minivan model? The most popular all seem pretty close for reliability, cargo space, fuel mileage etc.
Thanks in advance for any thoughts.