Living in Missouri and camping in the summer, I was not entirely happy with the 5000 btu AC that is built into the camper. I was considering a Coleman Mini Mach to go in the front vent hole.
Has anyone done this? I like the idea of the Mini Mach because it is 7100 btu which is 2100 more than the window unit, but the placement is also a lot better for cooling the entire camper. My kids get super hot in the bunks (especially the top bunk). Further more, it would be really easy to run a conduit wire across the top into the same plug in receptacle that runs the currents window unit. The mini Mach is only about 80 pounds so that shouldn't add any stress to the roof. It is a really low profile AC too.
...she started talking about how I never listened to her or somethin, I donno, I wasn't really paying attention...