PP $22. KK after several limpers - standard?

[skegvegaspoker]

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB (t1240)
Hero (t2470)
UTG (t2671)
UTG+1 (t2350)
MP1 (t2119)
MP2 (t1640)
MP3 (t3760)
CO (t1750)
Button (t2000)

Preflop: Hero is BB with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">5 folds</font>, CO calls t100, Button calls t100, SB completes, Hero raises all-in t2470...<font color="white"> CO folds, Button folds, SB calls t1190.</font>

Is this standard? Furthermore, is it optimal?