Did I misplay every street?

[BeakWetter]

I have not read any of the responses to ensure an unbias response, but apologies if I am repeating.

PF: Not in love with KTo here even if villian is a maniac. I would wait for a better spot to punish him. Regardless on to the hand...

Flop: Put in a 3rd bet and call a 4th. Maniacs tend to love throwing umpteen bets in on a flop.

Turn: I like the C/R as played. If you 3-bet flop and he does not 4-bet you, I then lead the turn. If you 3-bet flop and he 4-bets the flop go for the C/R on Turn.

River: I think I just call the river. Two spades with a Ten or 9 seem quite possible.
If you 3-bet river can you fold to a 4th?

[Yads]

There is not a chance in hell I'm folding KTo in the BB against a maniac's opening range. What's with the posts lately talking about making ridiculous folds PF in the BB?

As everyone said I'm going to war on the flop. Your pair is still vulnerable so get in as much money as you can now. I'd be more inclined to wait until the turn if I had a higher pair. River is tough, if you think he'll really 4 bet with worse then go ahead and 3 bet planning to call a 4th. If you'll be in a tough spot if he 4 bets then just call.