Bad imo. I wouldn't like it too much if it was HU vs reg without any blockers, but here he's 2barreling vs 2 ranges on a card that connects the ranges with the board even more, with a fish in the pot - I mean, that alone should be a reason not to bluff. ;)

The main problem here is the multiway nature of the situation....

I heavily doubt MP has any kind of semigood equity holding...
He is nutted here and building the pot so we basically have to fold turn snap ..

I somewhat agree with taz and kafri. I don't think he always has nuts, but the weaker hand he valuebets it's AJ + his semibluffs or bluffs that he would definitely would fold vs your shove.

The thing I don't like is that I don't think we would make the fun player fold enough. In this case I presume he called with a FD right? and probably a higher FD than yours right?

With the fun player in the hand I'd rather hit and extract value.

If we choose aggressive line with raise i would beginning do it on the flop. You diceded to play on flop passive line(call), so we have to folow our dicision and play call on turn.

I don't like the shove because MP range is so damn strong here.

Raise flop, continue aggression

At first glance your play seemed reasonable. I like the call on the flop to keep the fish in, particularly since we don't have a super strong draw as of yet, but on the turn yeah with 3 people in the pot I don't think our hand works too well as a semi bluff and here's why:

1) If fish has NFD, he also has top pair if he limped then called a raise, and even if it's Ad2d he is never folding top pair and most of our outs are destroyed.

2) MP is a thinking reg who iso raised fish in EP, so he has a lot of broadway hands here and pairs like 77+, so he either has two pair, the nut straight or a set. Two pair and sets probably won't fold because they will figure that you wouldn't jam with KQ, because why try to chase the fish out, so you have no FE vs. those hands. He'll figure you're on a draw and will snap it off. Also, if he has KQ, he's obviously not folding and also in this case most of your outs are gone.

OTT it's just a fold sadly.