I plan to check/raise the river
 

Villian is a 50/7.

Party Poker 5/10 Hold'em (6 max, 5 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img].
UTG calls, MP calls, Button calls, SB completes, <font color="#CC3333">Hero raises</font>, UTG calls, MP calls, Button calls, SB calls.

Flop: (10 SB) 9[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG calls, MP calls, Button folds, SB calls.

Turn: (7 BB) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, MP folds, SB folds, Hero calls.

River: (11 BB) J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks

Re: I plan to check/raise the river
 

Looks good.