PP $11 KK 2nd hand on button, of course A on flop

Advice please.

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) FTR converter on zerodivide.cx (http://www.zerodivide.cx/converter)

Hero (t790)
SB (t810)
BB (t800)
UTG (t800)
UTG+1 (t800)
UTG+2 (t800)
MP1 (t800)
MP2 (t800)
MP3 (t800)
CO (t800)

Preflop: Hero is Button with K/images/graemlins/club.gif, K/images/graemlins/diamond.gif.
<font color="#666666">1 fold</font>, <font color="#CC3333">UTG+1 raises to t30</font>, <font color="#666666">5 folds</font>, <font color="#CC3333">Hero raises to t125</font>, SB calls t115, <font color="#666666">1 fold</font>, UTG+1 calls t95.

Flop: (t387.50) 3/images/graemlins/spade.gif, A/images/graemlins/diamond.gif, Q/images/graemlins/club.gif <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">UTG+1 bets t80</font>, <font color="#CC3333">Hero raises to t225</font>, SB calls t225, UTG+1 folds.

Turn: (t917.50) 5/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
SB checks, Hero?

Did I raise too much on the flop, not enough? Is calling even an option? After the 225 bet I've already pumped in half my stack. All-IN? These situations come up frequently and with 2 others in the pot yet I don't know what I should have done on the flop. Nobody pushed back so I am pretty sure I am ahead, although people will call down with ace/small but they don't always bet out with it.

[11t]

I'd fold the flop. An ace hit, donks don't fold aces. If checked you can continuation bet or check behind and play your hand for value. However, as played I push the river and hope they fold since I am beat. This is what happens when you incorrectly pot committ yourself on the flop.