[Mitke]

What's your read on SB? He's calling 15:2 on the flop so he doesn't necessarily need that much. A pair could be enough. That donk-lead to 4 players looks strong (converter seems to have mixed the number of players).

The decision to see the showdown UI must be made on the turn. Are you willing to take 6.5:1 odds you are still ahead UI?

I think you are not ahead often enough vs. unknown so you should fold the river.

I'm not sure can I make these folds in the heat of the battle in a pot this big. But decision should be made on the turn anyway.