NL25: flopped set in multiplayer pot

[slickss]

PokerStars Pot-Limit Omaha/8, $0.25 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

Button ($26.65)
SB ($4.90)
<font color="#C00000">Hero ($13.60)</font>
UTG ($18.65)
UTG+1 ($21.10)
MP1 ($13)
MP2 ($17.95)
<font color="#C00000">MP3 ($91.95)</font>
CO ($16.05)

Preflop: Hero is BB with 2[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/heart.gif[/img].
UTG calls $0.25, UTG+1 calls $0.25, <font color="#666666">1 fold</font>, MP2 calls $0.25, <font color="#CC3333">MP3 raises to $0.75</font>, <font color="#666666">2 folds</font>, SB calls $0.65, Hero calls $0.50, <font color="#CC3333">UTG raises to $1.25</font>, UTG+1 calls $1, MP2 folds, MP3 calls $0.50, SB calls $0.50, Hero calls $0.50.

Flop: ($6.50) 7[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets $4</font>, UTG folds, UTG+1 folds, MP3 calls $4, SB folds.

Turn: ($14.50) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero..?</font>

I considered pushing here, both to semi-bluff and to get villain off his flush draw. Any thoughts?