oh i probably should have informed you all that i already have the parts running in a small little case. Mac OSX as well as windows and linux are all working perfectly. This post would be purely focused on the case modd, however if anyone is interested i can go into how i got everything running properly in osx. Surprisingly everything on my board was supported without kexts thanks to the new support for nvidia. The only addition i needed was the voodoo kernel which is great.
As far as the Hardrives are concerned. The two 750 GB hardrives are already filled (only about 100Gb left) with data (I have a bunch of blueray rips that i stream to several mac mini's around the house running plex)
the 320 for windows will most likely fill very quickly ( i have alot of games that i have not had a chance to install for sometime, plus i work in 3ds max and maya in windows alot)
The 150 for linux is just a old ide drive for messing around with my ubuntu install.
I normally attempt to avoid partitions because if the drive fails thats two OS's i loose. Surpassingly drive failures are kinda common for me
Im happy to see that there is interest, as soon as the final few parts come in ill update the thread with pics and plans