94o - TPWK, bet, call or dump?

[Rudi]

PokerStars 0.05/0.10 Hold'em (10 handed) converter

Preflop: Hero is BB with 9[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">1 fold</font>, MP1 calls, <font color="#666666">2 folds</font>, CO calls, Button calls, SB completes, Hero checks.

Flop: (6 SB) 9[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>

I've been struggling with flop aggression on hands like this one. On such a coordinated board, OOP, and with 6 players is a bet with TPWK +EV? And then can I call with 7 SB with possibly 5 outs. I'm thinking 5 outs is generous since the 4 adds even more straight possibilities.