live 2/5, 600 effective. Hero maniac image. Utg+3 who was winning a lot opens 20. Unknown called on the lowjack. Cutoff grinder called. I called with 9c8c. Sb loose aggressive fish called.(pot 105)

Flop Qh4c2c. utg+3 checked. Unknown bets 55. I called. SB called. Others folded.

Turn: Ac Unknown bets 115. I called. Sb folded.

river:8s Unknown all-in. I snaped. He had KcKh.

My question is, given the description of each players, do you prefer to raise the flop as a bluff? I know i got very lucky with the runout. I'm just thinking maybe there are more merits to bluff the flop. Because i could potentially bluffed out the better flush draw Sb likely to have. And i could represent sets that other players can't have. Because i play ever 22 and 44.

Any feedback is greately appreciated.