Reasonable spot to bluff?

[JTG51]

.50/1 PLO. To start the hand, I have $200+ and my opponent has about $100. I don't know much about him.

EP, MP, and LP limp. I limp on the button with A [img]/images/graemlins/club.gif[/img]K [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/diamond.gif[/img]8 [img]/images/graemlins/club.gif[/img]. SB folds and the BB calls. Six to the flop.

Flop: Q [img]/images/graemlins/club.gif[/img]9 [img]/images/graemlins/club.gif[/img]3 [img]/images/graemlins/heart.gif[/img]

Everyone checks to me and I bet the pot, about $6. All fold to MP who calls.

Turn: Q [img]/images/graemlins/club.gif[/img]9 [img]/images/graemlins/club.gif[/img]3 [img]/images/graemlins/heart.gif[/img]6 [img]/images/graemlins/diamond.gif[/img]

Checked to me, I check.

River: Q [img]/images/graemlins/club.gif[/img]9 [img]/images/graemlins/club.gif[/img]3 [img]/images/graemlins/heart.gif[/img]6 [img]/images/graemlins/diamond.gif[/img]9 [img]/images/graemlins/spade.gif[/img]

Checked to me, I bet the pot.

What do you think of my play on each street? Is this a raise preflop? Good spot to bluff on the river?