1. So SATA2 won't be a bottleneck, I thought that it would be. I will remember that.
2. About the 10Base-T NIC; I was only going to use it to network to my 2 HP Workstations running windows via Samba. Its not go to be utilized for rendering purposes.
Right now I am just ordering the CPUs for the time being. I won't be back home from Afghanistan until I take leave at the end of July. Around that time is when I will be looking for looking for rest of the parts to build my setup.
Thanks again!