can the nzxt phantom even fit the h100? also how high are you going to overclock the 2600k? is this build for gaming? if so the 2500k is the best gaming cpu on the market. the 2600k gives no performance boost over the 2500k in games. what resolution whill you be playing at?
you shouldve asked for advice before you bought. im sure you couldve gotten 2 6970's for that price and a 120gb ssd.