Read based move...

Playing at a Casino 1/2. The BB was a maniac...raising to $10 about 3-4 times an orbit and trying to absolutely bully the table....except he isn't very good at it....has lost quite a few buy-ins. He makes continuation bets usually...not always, but more often than not. UTG is a calling station....I have seen him call down the maniac so many times with overs, draws, etc. I have seen UTG raise or reraise a couple of times....always with the nuts, or close to. The rest of the table loves to limp preflop and call $10 raises. A $10 raise usually sees 4-5 people in the hand. I have been and am known as a rock at the table....Maniac told everybody I was. Hand in question....
I am CO with Kh10h. 4 people limp in front of me, I call, Button folds, SB folds....BB raises to $10....4 limpers call, I call.

Flop 5d 5s 10s
BB raises to $40, UTG calls...3 folds, Hero raises to $120...?

Any thoughts on my raise....good/bad...need to raise more?

What are the stack sizes

My bad...I have about $200...BB about $200 and UTG about $160