WA/WB multiway?

[MrEngenic]

I have no read on the preflop raiser, the rest of the bunch are loose passive.
Is this really a good line? I'm very unsure of how I played this.

Party Poker 2/4 Hold'em (9 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with J[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">2 folds</font>, <font color="#CC3333">CO raises</font>, <font color="#666666">1 fold</font>, SB calls, Hero calls, MP1 calls.

Flop: (8 SB) A[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, Hero checks, MP1 checks, <font color="#CC3333">CO bets</font>, SB calls, Hero calls, MP1 calls.

Turn: (6 BB) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, Hero checks, MP1 checks, <font color="#CC3333">CO bets</font>, SB calls, Hero calls, MP1 calls.

River: (10 BB) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>