Flush draw in huge pot hits

I'm new to the short handed scene, just started today actually. One of the first hands on the table so no real reads other than its a pretty loose game (you can probably tell by the preflop action). Comments welcomed on all streets. I'm mostly concerned on if I should slow down on this turn or not and if I should raise this river or hope button will do it for me so I can three bet.

Cryptologic 1.00/2.00 Hold'em <font color="#0000FF">(6 handed)</font> link

Preflop: Hero is UTG with 9[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">Hero raises</font>, MP calls, <font color="#666666">1 folds</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#CC3333">SB caps</font>, BB calls, Hero calls, MP calls, Button calls.

Flop: (20.00 SB) Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets</font>, BB calls, <font color="#CC3333">Hero raises</font>, MP folds, <font color="#CC3333">Button 3-bets</font>, SB calls, BB calls, <font color="#CC3333">Hero caps</font>, Button calls, SB calls, BB calls.

Turn: (18.00 BB) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, Hero checks, <font color="#CC3333">Button bets</font>, SB calls, BB calls, Hero calls.

River: (22.00 BB) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>...