FT 8/180 Final Table - flopped flush draw vs active player

[L0QTiS]

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t1200/t2400
(Ante: t300)
4 players
Converter

Stack sizes:
UTG: t87361
Hero: t116454
SB: t25740
BB: t40445

Pre-flop: (4 players) Hero is Button with 9[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/spade.gif[/img]
<font color="#cc0000">UTG raises to t6425</font>, Hero calls t6425 <font color="aaaaaa">(pot was t11225)</font>, 2 folds.

Flop: 4[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/club.gif[/img] (t17650, 2 players)
<font color="#cc0000">UTG bets t17650</font>, <font color="#cc0000">Hero ?? t109729</font>

Villain has been very active down to the last 6-7 here at the final table, and here we are down to 4. Feel free to comment on the preflop play as well.