25NL best river plan?

[anthb7210p]

villan is unknown

Poker Stars, $0.10/$0.25 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

MP: $10.35
Hero (CO): $24.65
BTN: $40.95
SB: $19.45
BB: $23
UTG: $26

Pre-Flop: A[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/heart.gif[/img] dealt to Hero (CO)
2 folds, <font color="red">Hero raises to $0.85</font>, BTN folds, SB calls $0.75, BB folds

Flop: ($1.95) 6[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $1.40</font>, SB calls $1.40

Turn: ($4.75) 3[img]/images/graemlins/heart.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $3.50</font>, SB calls $3.50

River: ($11.75) 8[img]/images/graemlins/heart.gif[/img] (2 Players)

I'm thinking a b/f is best of about 6, b/c he is unlikely to raise hands that are not flushes given the odds i will be getting, but wanted see what you all thought about it.