AKo with flush draw after flop

[Clownfish]

SB is new on table so no read.
How would you play this differently?

Party Poker 1/2 Hold'em (10 handed) converter

Preflop: Hero is UTG+1 with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
UTG folds, <font color="CC3333">Hero raises</font>, UTG+2 calls, MP1 folds, MP2 folds, MP3 folds, CO folds, Button folds, SB calls, BB calls.

Flop: (8 SB) 9[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="blue">(4 players)</font>
SB checks, BB checks, <font color="CC3333">Hero bets</font>, UTG+2 folds, SB calls, BB folds.

Turn: (5 BB) 7[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">SB bets</font>, Hero calls.

River: (7 BB) 9[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">SB bets</font>, Hero folds.

Final Pot: 8 BB