looking for the muck? can i find it? should i?

[mike l.]

40-80 commerce. i have 9c7s in the cutoff and ive posted having come back from the restroom too late to buy the button. utg who has been playing snug raises, 3 people cold call, i call one more small bet, button cold calls, sb who has been playing snug calls, bb calls. lots of money lots of players. only pot like this all night.

the flop is 974 all hearts. checked to guy just on my right who bets, i raise, sb cold calls, utg cold calls. guy on my right calls. 4 of us.

turn is 8c. checked to me and i bet, sb pauses and checkraises, utg calls two cold, other guy folds, i call.

the river is As. sb bet, utg immediately calls. overcall or fold? is it close?