Time to install El Capitan.
A minor hardware upgrade:
1) Added 2x8 DDR3-1600 DRAMS, for a total of 24GB
2) Added a Kingston 120GB SSD for startup
BIOS Settings
Flashed to F22
Load Defaults
Numlock -> Disabled
Sata Mode -> AHCI
Super IO -> Disabled
Installation
1) Built Unibeast Installer with El Capitan on my MacBook Pro.
2) Install El Capitan to erased SSD
3) Boot into El Capitan install
4) Run Multibeast and install
Quick Start > UEFI Boot Mode
Drivers > Audio > Universal > VoodooHDA v2.8.8
Drivers > Misc > FakeSMC v6.18-313-g671f31c.1707
Drivers > Misc > FakeSMC Plugins v6.18-313-g671f31c.1707
Drivers > Misc > FakeSMC HWMonitor Application v6.18-313-g671f31c.1707
Drivers > USB > 7/8/9 Series USB Support
Bootloaders > Clover v2.3k r3423 UEFI Boot Mode
Customize > System Definitions > Mac Mini 6,2
5) Used KextBeast to install AtherosL1cEthernet.kext for Network
NOTE: Sound not working, but since it is a server, I don't need sound.