HU - In BB flop flush draw

sb is standard looser, nothing really stands out about him

Party Poker 3.00/6.00 Hold'em <font color="#0000FF">(5 handed)</font> link

Preflop: Hero is BB with T[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, SB completes, Hero checks.

Flop: (2.00 SB) 7[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises</font>, SB calls.

standard? I do not plan to check the turn for free card.
Is this ok?

Turn: (3.00 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, SB calls.

River: (5.00 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, SB's action doesn't matter.

Final Pot: 7.00 BB.

When he calls the turn should I bluff at the river? The bluff needs to work once every 5 times to break even.