K4s in SB

[Eeegah]

Fold that flop. Giving yourself a full 3 outs for your kings is ridiculous as you have no kicker.

Checkraising the turn is silly; you ain't getting value for it, and you ain't folding the PFR.

Hell I'm not even enthused with your preflop call. You're getting (12-1.5)/1.5 = 7:1 (6:1? I hate you odds notation), with no connectedness and easily dominated top pair strength. Meh, not my cup of tea, but I might be in the minority here.