valhalla360,
My use is rural business trips of two weeks, often in cold weather. I may have a single 15 amp circuit, but not always.
Since I'm in a class C, the propane tank is fixed. There is no access to refill in small towns. Therefore I wish to run off 120 power for all energy needs including space heating.
I will not sleep with a generator running. Hence the need for a large capacity battery bank.
I have room for 7 group 29 batteries. If it will fit, I'll replace the starter battery with an SiO2 as well. That ought to leave me close to 7 kwh of usable storage.