Yes, blurymind, you certainly can build packages for VL 6.0 final (or even SOHO or Light) from a clean rc4 system. Your contributions would be more than welcome. We're doing all we can to have a very well stocked VL 6.0 repository. Anything you can add would definitely help.
eMachines EL-1300G desktop, 1.6GHz AMD Athlon 2650e CPU, 4GB RAM, nVidia GeForce 6150 SE video
CentOS 6.5 (will try VL64-7.1 soon)
Toshiba Satellite A135-S4727, Intel Pentium T2080 / 1.73 GHz, 2GB RAM, Intel GMA 950
HP Mini 110 netbook, 1.6GHz Intel Atom CPU, 2GB RAM, Intel 950 video, VL 7.1