Now I just use CD/DVD and force feed YUM after wards.
As long as SSH and eth0 is configured properly by the hands on the console during install... all is well.
Since I don't RUN a DHCP, PXE, TFTPD server anymore (I tried, really I tried), the number of installs I do now just aren't worth it.
Considering I'm deploying virtual machines now, it just doesn't make sense.