Small two pair + flush draw OOP

[CourtesyFlush]

Villain in this hand is very lag preflop but so far seems pretty solid postflop. I think his stats were about 60/25. How is my play on all streets?

Party Poker No-Limit Hold'em, $ Hero (6 max, 5 handed) converter

Hero ($250.60)
UTG ($112.65)
MP ($147)
Button ($417)
SB ($239.95)

Preflop: Hero is BB with T[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $1.
<font color="#666666">2 folds</font>, <font color="#CC3333">Button raises to $4</font>, <font color="#666666">1 fold</font>, Hero calls $2.

Flop: ($9) K[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $8</font>, Button calls $8.

Turn: ($25) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

River: ($25) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $15</font>, <font color="#CC3333">Button raises to $70</font>, Hero calls $55.

Final Pot: $165