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?