This is all very helpful. My electric bill this past month came in with close to 1600kw of usage which was bananas. Granted, it's winter so I left the heat on 50 upstairs and downstairs, have the hot tub, etc. I'll probably wait until april/may to see what it levels out to on a normal non-winter basis before running the numbers.
Trust me, mini split is already being contemplated as well to make things more efficient
I've only owned the place since June so there's still some things to tighten up.