SB Special: value bet or check raise?

[MandM_WSU]

Table is relatively loose-passive. Input on all street is appreciated. Is my flop donk wrong? Turn check-call OK (with three new outs)? What's my river play when I hit my baby flush?


PokerStars 0.05/0.10 Hold'em (9 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with 2[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">2 folds</font>, CO calls, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (4 SB) Q[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, MP1 folds, CO calls, SB calls.

Turn: (3.50 BB) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, <font color="#CC3333">CO bets</font>, SB calls, Hero calls.

River: (6.50 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero ???</font>