Playing a draw/bluff OOP too aggressively?

[muddydog]

Full Tilt No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO ($43.50)
Button ($66.50)
SB ($80.10)
Hero ($49)
UTG ($23.60)
MP ($13.05)

Preflop: Hero is BB with Q[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img].
UTG calls $0.50, <font color="#666666">1 fold</font>, <font color="#CC3333">CO raises to $2.25</font>, <font color="#666666">1 fold</font>, SB calls $2, Hero calls $1.75, UTG calls $1.75.

OK at this point the flop comes down all diamonds and I have a high one. I am out of position though, is this a spot I should just check fold? I figure the lead in has to be scary, maybe I can take the pot down right now. Looking back if I'm going to do this should it be a larger bet?

Flop: ($9) 2[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets $5.5</font>, UTG folds, CO calls $5.50, SB folds.

Cut off calls, at this point I put him on a high pocket pair that doesn't want to give up yet. He could easily have a high diamond though so I will evaluate again on the next street.

Turn: ($20) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $10</font>, CO calls $10.

I probably would have given up at this point but I just picked up an up and down straight draw and figure he might fold to continued aggression, if not I figure I have a lot of possible outs. I do not put him on the flush draw as being likely because he was the preflop raiser, it is possible but not as likely as it would be if he were a preflop caller in my experience.

River: ($40) K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $10</font>, <font color="#CC3333">Hero raises to $30.5</font>, CO calls $15.75 (All-In).

At this point I think if I check to him with a diamond in his hand it's possible he'll bet out for value, and have a hard time folding any when I raise due to pot odds. Note with the king out there there's only one card in the deck that beats me, do you like this play?

Final Pot: $96.25 <font color="blue"> </font> <font color="blue"> </font>