What's the highest limit that's supposed to be posted here?

Edit:
I don't 3-bet, cuz I don't think I can isolate. But playing it like you did, I'm not sure about the flop raise either. That's a horrible flop, and it's likely that your opponents will go to the river. Also after UTG calls your flop raise, I think you're done with the hand.

I call the river hoping he was on as draw.