Well, finally made it down to the only MicroCenter in CA and scored a 4790K, made it back to San Jose & installed on an existing rig which is equipped with 10.8.5 as well as 10.9.4 on another partition.
So far 10.8.5 will boot only in safe mode, 10.9.4 gets KP even when in safe mode, and than requiring a restart, the Windows partition appears to have taken to the new processor without issue.
I currently have 32GB of RAM, which has been running stable with the 4770K... I think I'm going to try removing a couple sticks to see if that has any effect.