Huge pot top set when to raise?

[xerok]

Live 12-24 juicy Game: Game is very loose, a lot of players to the flop, lots of money on the table.

-8 Players-
Preflop: UTG,UTG+1 folds, MP1 through 3 limps, Hijack Raises, CO calls, I three bet on the button with A-A, SB and BB call.
Flop: A[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/club.gif[/img]

Flop gets checked around to me, i bet. three callers, mp1 2 bets, gets called all the way to me.

Should i 3-bet the flop on this drawy board, or wait till the turn to pop it up so the raiser bets into me and if the flush draw doesnt get there, get players to cold call two bets to chase their draw?