[McMelchior]

With the antes there's 4,200 in the pot before any action, giving you 6.5 effective BB (measured as 2/3 of pot). Your options are rapidly disappearing, and your FE is at risk.

MP3 can - and should - raise with a very wide range, including "steal" type hands like 55 - 22, A8-AT, KTs, KJ, QJ etc., that he very well might fold to a push.

That you haven't seen him "steal" in the last 3 orbits might signify that he is tight, or it might signify that he had very poor hands or that the situation wasn't right for it.

If you've been raising liberally a stop-n-go is probably a good strategy; if you've been tight a push might work best.

IMHO folding here is way too tight.