PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (9 handed) converter

UTG (t1466)
UTG+1 (t2375)
Hero (t1803)
MP2 (t2427)
MP3 (t1324)
CO (t3205)
Button (t2690)
SB (t2005)
BB (t1490)

Preflop: Hero is MP1 with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t300</font>, <font color="#666666">2 folds</font>, CO calls t300, <font color="#666666">3 folds</font>.

Flop: (t750) 3[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t400</font>, CO folds.

Final Pot: t1150

What was your plan if he called and another blank hits? if a K or Q hits?
What about if he would have raised all-in?

I like these play when they work, but I sometime loose a big amount of my stack...