Thanks so much for your reply, it's very helpful! I wanted the ac because myself and 3 other people will be using the rv for a month-long road trip and it gets pretty hot in there during the day (when we'll likely be doing most of our driving). The cab ac doesn't work, and I didn't think the cab ac would cut it, but maybe I'm wrong. Do you think cab ac would be sufficient? Regardless, I will definitely be mounting a portable generator if I decide to get one at all. Thanks again.