I would have attacked the blinds and the limpers with that hand by betting 7500. Unless UTG was limping with a powerful hand because the table had been aggressive, he probably isn't calling, both blinds are most likely not calling, and I doubt UTG+1 is going to call here, although out of everyone he is most likely to call.

Raising that amount is significant to everyones stack, and everyone but UTG+1 is going to be squeezed since they are not last to act (both blinds are going to fold unless they got a monster here, and UTG is either pushing over you or folding). You'd probably pick up a 5250 pot here by doing this, and if you get reraised, you got a good hand to go one on one with depending on who does what (if one of the blinds goes all in, fold, they aren't likely to bluff there).