Chipleader w/overcard flushdraw and recently wild image

[AJ_Rider]

Daily rebuy tourney at the Bike.

Hero has just gained the chiplead after making a play with a pre-flop raise with 95o to a limp and hitting 2-pair on the flop, doubling through a JJ overpair. Otherwise Hero has been playing noticably tight.

Next hand gets dealt Q [img]/images/graemlins/spade.gif[/img] T [img]/images/graemlins/spade.gif[/img] in the CO. Blinds are 25/50 just after the first break, table is 9-handed. 3 limpers and Hero limps along, OTB folds, BB plays, 5-way.

Flop is 9 [img]/images/graemlins/spade.gif[/img] 7 [img]/images/graemlins/spade.gif[/img] X [img]/images/graemlins/heart.gif[/img]
BB checks, UTG bets about the pot, UTG2 calls, MP folds.
UTG and UTG2 both have about 2000, Hero has about 3500. BB and UTG are both tight conservative, UTG2 is new to table, older asian man.

What is Hero's play?

(Hero thought for about 5 seconds and pushed, BB folded, UTG folded, UTG2 calls with J9o. So two other questions are, if you know only UTG2 will call and he has a weak pair, would you push? And, if you are the UTG2 and think that CO is pushing with 2 overcards and a flush draw, would you call all-in?)