Joe, I want to explore what you have described to my coach. 4ea 8d batteries for 12vdc house system with a 2500 watt xantrec Freedom Inverter. I would like to arrange for that inverter, with proper management, to operate 1 AC for the coach (Cruise Air) and also rig an auto start for the gen set so that if we are out of the bus and the dogs are in the bus, if the shorepower fails the auto gen set will keep us from having "Hot Dogs" and also allow us to use the one Cruise Air while cruisin down the Highway......what you think?