[Watain]

I would give you 3 outs on the flop. 2 for the two 7´s + 1 for str8+flsh.

So you need 14:1 to call.

You need to contract 2 big bets to make this breakeven, which is very likely.

Lets take the worst case scenario. The flop is capped and 3 players sees the turn (including you). That would give you 16:4 = 4:1. This means that you would have to contract 5 big bets on the turn and river to make it breakeven.

Even the worst case scenario seems like it won´t cost you to much. So i would call it.