AK checking flop

[Allinlife]

Party Poker No-Limit Hold'em Tourney, Big Blind is t30 (10 handed) converter

UTG+2 (t835)
MP1 (t720)
MP2 (t935)
MP3 (t1070)
Hero (t775)
Button (t355)
SB (t775)
BB (t860)
UTG (t915)
UTG+1 (t760)

Preflop: Hero is CO with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">6 folds</font>, <font color="#CC3333">Hero raises to t80</font>, <font color="#666666">2 folds</font>, BB calls t50.

Flop: (t175) 9[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

Turn: (t175) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets t50</font>, <font color="#CC3333">Hero raises to t150</font>, BB folds.

Final Pot: t375

I was wondering if the best move on the flop was to check behind instead of semibluffing. I figured getting check-raised on this flop would suck, and that any hands w/o diamond would be scared anyways.