[Sir_Pillage]

Do not push.

Pokerstove says you are 52% EV against a top 75% hand and 52.5% against a top 80% hand. So assuming he's calling with his whole range, which I think is pretty fair here, pushing is obv +Chip EV.

However, we only care about Monetary EV:

If you fold stacks are:

Button: 384k
SB: 80k
Hero: 47k

Monetary EV: $3369

If you double up:

Button: 323k
SB: 80k
Hero: 109k

Monetary EV: $3842

So pushing makes your MEV .52*$3842+.48*$2800 = $3341

In other words it is actually -$28 MEV to push. There's no way you should be pushing here unless you think you are an underdog against your opponents and gambling is your best chance of winning. In the later stages of a NLHE tournament Chip EV and MEV cease to coincide because of the payout structure. If everything went to 1st place then all these guys claiming A2o is ahead so push would be right.

Whether the stop and go is right here is more complicated. Personally I would just fold because the stop and go is a pretty transparent play, and A2o plays so badly after the flop with other courses of action. You can't afford to lose the 11k chips which give you a good amount of your preflop fold equity against a guy who's already calling everything at this point.