Slowplay this? QKs

[Inevitable]

Button is extremely fishy. I knew he was going to minbet, and so I checked to try to sandwich BB. In retrospect, I feel like the amount was too small for him to be properly "sandwiched" so I may have made a mistake. Does anyone check-call here to try to induce a bluff later on from button? I saw him in a hand where he minbetted the flop/turn and then half-potted a small pot. I raised because I didn't want a heart draw to get a cheap go.... so does anyone slowplay this for more value? Any help appreciated on all streets, thanks.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) converter

MP1 (t1500)
Hero (t1520)
MP3 (t1620)
CO (t1440)
Button (t1200)
SB (t1740)
BB (t1500)
UTG (t1500)
UTG+1 (t1480)

Preflop: Hero is MP2 with Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t80</font>, <font color="#666666">2 folds</font>, Button calls t80, <font color="#666666">1 fold</font>, BB calls t60.

Flop: (t250) 3[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero checks, <font color="#CC3333">Button bets t20</font>, BB calls t20, <font color="#CC3333">Hero raises to t200</font>, Button folds, BB folds.

Final Pot: t490