So glad to have come across this site / thread. I am also in a similar situation- started lurking this page when I knew I had to upgrade my editing situation, and my 2k budget wouldn't get me the mac pro that I need. Besides, the thought of building a Hackintosh has intrigued me for a while.
Getting to the point:
I too am looking to build a new video editing machine, and will need POWER for 4k editing and other applications (motion graphics, animation, etc.). Although I am a total NOOB at this (look- my first post!), I do want something with a little more oomph than the stable builds listed on the new Dec. buying guide. I've been following the Haswell E / x99 forums, and was planning on the i7 5820k / Gigabyte (or ASUS) x99 combo... other specs are gtx970, a samsung ssd, 32 gb ram... I see that some others with much more experience have gotten them working.
Should I pursue this build? I don't want to settle for the quad-core options with all of this new stuff out that's potentially in my budget. However, I want something stable and DO-ABLE with my limited experience. Also, I'm noticing Thunderbolt is a much harder addition than I expected, and I would need that as well...
LONG STORY SHORT - is pursuing this build the best course of action? Meaning is this going to provide me with the best performing machine I can afford? I do have some friends that can potentially help me should the installation instructions get beyond my ability, but I just want to see if I'm totally crazy, or if this is a good call...
Sorry to be so long-winded!