KK w/ uncomfortable stack size - What's your plan on this flop?

[Shorty35]

Empire Happy Hour; 28 left - 10 pay.
New to table - no reads

***** Hand History for Game 2849770306 *****
NL Texas Hold'em Trny:16446442 Level:6 Blinds (75/150) - Monday, October 10, 23:59:50 EDT 2005
Table Happy Hour $10,000 Guaranteed(484115) Table #3 (Real Money)
Seat 2 is the button
Total number of players : 9
Seat 2: jostrom ( $3923 )
Seat 3: mossyface ( $1588 )
Seat 4: WESTLE ( $4335 )
Seat 5: flatman23 ( $7470 )
Seat 6: ynotmein05 ( $1630 )
Seat 7: onevision200 ( $5355 )
Seat 8: justmeken200 ( $730 )
Seat 9: LeftyB2 ( $3405 )
Seat 10: Shorty35 ( $2035 )
Trny:16446442 Level:6
Blinds (75/150)
** Dealing down cards **
Dealt to Shorty35 [ Ks Kd ]
flatman23 folds.
ynotmein05 folds.
onevision200 folds.
justmeken200 folds.
LeftyB2 folds.
Shorty35 raises [400].
jostrom folds.
mossyface folds.
WESTLE calls [250].
** Dealing Flop ** [ 4d, 7h, Ac ]
WESTLE checks.
Shorty35 ?