playing back vs 40% stealer

[helpmeout]

Party Poker 10/20 Hold'em (6 max, 6 handed) converter

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

Flop: (4.50 SB) Q[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

Turn: (2.25 BB) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, <font color="#CC3333">Hero raises</font>

This guy is another one of your 50/30 players who steals at over 40%.

3bet preflop or is this fine? I planned to checkraise the turn even if he bet the flop.