Sounds very cool and interesting. Have thought about this myself, but always chickened out. If you notice on the software install page:http://www.cultofmac.com/304167/how-to-build-gaming-hackintosh-part-3-software/
Down near the bottom are some tips that make me leery:
After restarting your Hackintosh with your fingers firmly crossed, your components should be working.
and this one:
Maybe one day I'll give it a try. But I use Newegg...the parts are cheaper there.