($24) Would you cbet vs. a loose passive player here?

[Pocketbear]

The villain is 40/5.

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t50/t100
9 players
Converter

Stack sizes:
UTG: t2310
UTG+1: t1325
MP1: t580
MP2: t1045
MP3: t1940
CO: t1405
Hero: t1550
SB: t1540
BB: t1805

Pre-flop: (9 players) Hero is Button with K[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/heart.gif[/img]
6 folds, <font color="#cc0000">Hero raises to t250</font>, SB folds, BB calls t150 <font color="aaaaaa">(pot was t400)</font>.

Flop: J[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/heart.gif[/img] (t550, 2 players)
BB checks, Hero?