50 NL Flopped Nut Flush. How's my line?

[lmw]

Villian is LAG. should i have checked and given him the chance to bluff a missed draw?

Ultimate Bet No-Limit Hold'em, $.50 BB (9 handed) FTR converter on zerodivide.cx

MP1 ($45.50)
MP2 ($42.50)
MP3 ($52.05)
CO ($47.75)
Button ($81.65)
SB ($43.75)
Hero ($54.70)
UTG ($50)
UTG+1 ($37.80)

Preflop: Hero is BB with 2[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
[color=#666666]3 folds</font>, MP3 calls $0.50, CO calls $0.50, [color=#666666]1 fold</font>, SB completes, Hero checks.

Flop: ($2) Q[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img] [color=#0000FF](5 players)</font>
SB checks, Hero checks, [color=#CC3333]MP3 bets $0.5</font>, CO calls $0.50, SB calls $0.50, [color=#CC3333]Hero raises to $1.5</font>, [color=#CC3333]MP3 raises to $2.5</font>, CO folds, SB folds, [color=#CC3333]Hero raises to $10.5</font>, MP3 calls $8.

Turn: ($24) 9[img]/images/graemlins/heart.gif[/img] [color=#0000FF](3 players)</font>
[color=#CC3333]Hero bets $8</font>, MP3 calls $8.

River: ($40) K[img]/images/graemlins/spade.gif[/img] [color=#0000FF](3 players)</font>
[color=#CC3333]Hero bets $15</font>, MP3 folds.

Final Pot: $55