I think this is a straightforward stack off post flop, but the question is preflop.
LearnWPT standard would be 3bet or fold here as the first caller, but other poker strategies have this as a +eV call from the CO at this effective stack.
I consider 3betting or calling, but think this would only be a fold against active blinds...and there could be a case fro 4bet re-squeezing if an active players squeezes after Hero flats here (with QTs). That's another discussion.
1) What are the criteria for 3betting, flatting, and folding...and the associated ranges in this spot, at this effective stack? I look at RFI of MP1, 3bet% of players behind, MP1's fold to 3bet %, and stack sizes of players left to act.
2) Once the SB does 3bet, I think its a call at this sizing, with the MP1 calling. Your thoughts? Would I call if MP1 folded and I was getting worse odds, but heads up IP? Against this sizing I think its close, but I think its a call against a tight recreational player because they are likely to pay off if I hit 2pr+.