Flat >>> Fold preflop. We are in position so our range can be weaker then villains postflop+ great pot odds. Also folding is super unbalanced.
We have tons of Axo and such in our pre open range and we even have to play bunch of those to stay balanced (or if we were to leak by folding too much, we would first be folding those Axo Kxo blocker steal hands), not folding ATs.
If villain does 3b-fold decent amount and has somewhat tight 3b-get it in range flatting is more +ev then shoving in some +ev shove spots ( theoretically obvious if we're in position with strong hand). There is 830 in the pot before villains action so he probably shoves some hands as well, which makes range consideration harder.
We would snapcall shove, right?(folding would again be super unbalanced)
Villain seems good so I would recommend being fairly balanced in this spot.
I like postflop though checking flop and turn are viable as well. Out of better hands AQ, 9X and AT might fold turn and fit villains line, most good hands would bet-get it in postflop on this drawwy board.