NL100 - KK oop v. 12/8/3 Nit - WTF am I doing here?

[Snipe]

So I really don't know how I'm supposed to play this after the flop. I'm sure many will say to bet the flop, however I'm not convinced that doesn't turn my hand into a bluff.

Do any of you nits float me here? If I bet the flop and check the turn, do you shove any hand w/o an ace? Do you shove the flop w/ AK?

Completely confused as to how to approach this one - sorry if I'm a bit incoherent but after 5K hands, my brain is scrabled.

Help

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $190.65
Hero (BB): $178.35
UTG: $103.90
MP: $100.00
CO: $82.40
BTN: $117.35

Reads: <font color="blue">Me: 23/19/3.4
Villain: 12/8/3</font>

Preflop: Hero is dealt K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img] (6 Players)
2 folds, <font color="red">CO raises to $4.00</font>, 2 folds, <font color="red">Hero raises to $13.50</font>, CO calls $9.50

Flop: ($27.50) Q[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets $20.00</font>, Hero calls $20.00

Turn: ($67.50) 4[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets all-in for $48.90</font>, Hero folds
Uncalled bet of $48.90 returned to CO

Pot Size: $67.50 ($3 Rake)