I'm not qualified at all to comment but if this was at my stakes I would definantly raise the flop. There are a ton of scare cards that can come on the turn and the Donkey could be leading with a pair or a draw here. I doubt he has you beat due to the number of uuuuus you put in huge fish. UTG can call with a wide range here for implied odds. The fish is obviously a huge station based on his JJ call and UTG can expect to get a good amount of value if he hits.

I think if you raise and get 3 bet in this situation you need to fold. If SB calls I would fold a diamond if lead into and check behind a blank. If UTG calls in any situation I would proceed with caution.