I've spent many hours with graph paper and the online room designer this weekend and still haven't got a plan I like for my cabin. Where I'm running into trouble is with the storage - clothes closet, coat/stuff closet, and utility room. Arranging these to my liking is proving difficult. I also keep going back forth about the indoor plumbing thing.
If I can drag my butt out of bed early enough tomorrow, I'll go look at some 12v 150Ah AGM batteries I found online that are close to town here. He only wants $50 each for them, and says they're all good. They came out of a cell tower. It's worth a look.
I also want to stop at the local Habitat for Humanity ReStore and see what they have in windows, doors, and kitchen cabinets.