Does the 4 save us or make us the 2nd best hand LOL?

What can we attribute MP2's turn raise to? If he's good, you have to put him on one of a big ace or suited broadway or maybe KQo, right? The chances of him cold-calling one opponent with A4s or 44 is pretty low, so we should be reasonably safe from the turn 4. So the turn raise suggests either a slowplayed made hand (2 pair or a big set) from the flop or an isolation raise to get us HU.

The rock is pretty passive but I'm a little concerned he calls two cold on the turn.

I don't believe either villain has a straight. So if we're behind on the river, it's to a boat. You certainly aren't betting a big hand into a fold. The passivity of MP3 suggests he'll just call, so it's down to u and MP2. I can live with your river raise on the premise that you'll get two callers if ahead, but I'm curious if you would call a re-raise back to us.