slowplay or reraise middle set?

[elliott44]

2-5 NL Borgata.I'm in middle position 77.The game is very average in terms of aggression and looseness.
Early position player bets $20, a middle position player calls ,I call and a late player calls. Both blinds fold.
4 players $87 in pot.
I have $950 behind, The late player has around $1100 and the early and middle have $400.
The flop comes 9 7 4 rainbow.
The initial early better bets $20 (he usually underbets),the next player raises to $60 I reraise to $120 and the late player folds as do the two other players and I take down a pot of$167.
Would it have been better to smooth call the $60 flop raise and pop it hard on the turn since there were no draws on the board?
Appreciate any opinions. Thanks