Stars 4.40 KK hand

[Le Sug]

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO (t7195)
Button (t5415)
SB (t4050)
Hero (t2005)
UTG (t1850)
UTG+1 (t1975)
MP1 (t7065)
MP2 (t2600)

Preflop: Hero is BB with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
UTG calls t100, <font color="#666666">3 folds</font>, CO calls t100, <font color="#666666">1 fold</font>, SB completes, <font color="#CC3333">Hero raises to t500</font>, UTG calls t400, CO calls t400, SB folds.

Flop: (t1600) 5[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets t1505 (All-In)</font>,

Was this good poker? The flop push was really bad? I am guessing that no worse hands were calling, but I was also trying to represent strong ace to push people out in case someone called with ace rag, is this a valid tactic?