$12 KK Flop-bet ok?

[mortimo]

Last time MP1 mini-raised (t60), he had 108s from mp, so this could be anything. He has been loose-aggressive so far and played almost every hand. He won the other hand with a flush..I decided to bet t300 preflop, but I know that the standard t360 is better. No way we can fold here if he shoves the flop, right? What if he just calls and a scare-card comes on the turn? (This is not a result-oriented post)

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t30/t60
7 players
Converter

Stack sizes:
UTG: t1555
UTG+1: t2145
MP1: t3160
CO: t1150
Button: t1235
SB: t2490
Hero: t1765

Pre-flop: (7 players) Hero is BB with K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img]
2 folds, <font color="#cc0000">MP1 raises to t120</font>, 3 folds, <font color="#cc0000">Hero raises to t300</font>, MP1 calls t180 <font color="aaaaaa">(pot was t390)</font>.

Flop: (t630) 7[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/spade.gif[/img] (2 players)
<font color="#cc0000">Hero bets t420..</font>