NL100 Party, Straight on Turn, very ugly River card, 1.x Potsize left

[kamel]

PartyPoker $100 NL Hold'em <font color="#0000FF">(5 handed)</font> HandRecorder v0.9b

Stacks &amp; Stats
SB ($138.41)
CO ($89.30) (53/16/2.64/34) (55h)
BU ($45.64)
BB ($106.49)
Hero ($99.76)

Preflop: Hero is MP with J[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img]
<font color="#FF0000">Hero raises to $3</font>, CO calls $3, <font color="#666666">3 folds</font>.

Flop: ($7.50) 9[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#FF0000">CO bets $3</font>, Hero calls $3.

Turn: ($13.50) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#FF0000">CO bets $5</font>, <font color="#FF0000">Hero raises to $20</font>, CO calls $15.

River: ($53.50) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero ???

Villain is a live one, so far he did not respected my cbets, but liked to make small bets for his own. That's why I didn't cbet but liked to c/c the flop for drawing cheap and to c/r the turn. Villain thought long before calling the c/r at the turn.

What should be my line on the river?

Should I play any street before different?