If you were just playing MP1, it would be an easy shove. His range is pretty narrow after calling the flop raise. He probably calls your turn shove with AcAx, AcKx, QQ, AcJc, maybe KcKx or AcTc. You beat 6-9 hands, he has 5-6 hands that beats you.

MP3 is a little scary, though -- he called the flop raise with the PFR/cbettor still left to act. It makes me think he's not worried about a re-raise and is hoping that MP1 calls or shoves to get more money in the pot. Or maybe he's just not thinking about other players, and likes a club draw in his hand.

I guess I would shove, but I can't guarantee that's the right thing to do in this situation.