Thanks. My brain is all ready mush. However I think I have my plan dialed in now. On the plus side I have a 30 foot fifth wheel I am gonna use for donor parts. Sinks shower tanks stove awning ECT. I will most likely go composting toilet and house refrigerator though.
With high-load refrigeration demands or any other high-amperage power requirements (such as a welder, since you mentioned making metal art), use a good generator. Air-conditioning, household-type appliances / accessories and any other high-amperage demands will take a battery bank down quick.