I’m glad all your alternatives paid off. I remember years ago NY was without power for 3 days. I can say it was a panic. Now imagine if it was for a week or even longer.

My Dad keeps talking about getting a Tesla power wall for the cabin...

I think your dad is right. I’m actually considering it myself. It’s only matter of time when something happens. When it does, the only problem you may have are your neighbors.
I wish you get well!