KK: raise more on flop?

[45suited]

Not a bad beat post. And I know that these idiots would have called any bets apparently. (I'm concerned with playing this hand 'correctly', not asking how I could have avoided this, if that makes sense.) Pushing the flop seems to let them out of making a mistake too easily.

So, my question is, do you like my flop raise? If not, what do you raise to on the flop? PP $22

PartyPoker, Big Blind is t15 (10 handed) Converter on pregopoker.com

UTG (t800)
Hero (t800)
MP1 (t910)
MP2 (t800)
MP3 (t800)
CO+1 (t770)
CO (t800)
Button (t790)
SB (t730)
BB (t800)

Preflop: Hero is in UTG+1 with K[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img]
UTG calls t15, <font color="red">Hero raises t70</font>, <font color="gray">MP1 folds</font>, <font color="gray">MP2 folds</font>, <font color="gray">MP3 folds</font>, <font color="gray">CO+1 folds</font>, CO calls t70, <font color="gray">Button folds</font>, SB calls t60, <font color="gray">BB folds</font>, UTG calls t55

Flop: (t295) 4[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (4 players)
SB checks, <font color="red">UTG bets t60</font>, <font color="red">Hero raises t275</font>, <font color="gray">CO folds</font>, SB calls t275, UTG calls t215

Turn: (t1120) 4[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/club.gif[/img] (3 players)
SB checks, <font color="red">UTG raises t455 (All-in)</font>, <font color="red">Hero raises t455 (All-in)</font>, <font color="red">SB raises t385 (All-in)</font>

River: (t2415) 4[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] (3 players)

SB shows [ Ts, Qs ] a pair of fours.
UTG shows [ 3h, 3c ] a straight, two to six.
HERO shows [ Ks, Kc ] two pairs, kings and fours.
UTG wins 140 chips from side pot #1 with a straight, two to six.
UTG wins 2275 chips from the main pot with a straight, two to six.