Struggles with Clover and Mojave with Xeon x5690

I have been toying around with creating a USB boot drive for the last few hours for Mojave to install on my dual x5690 rig. I have been following this guide and I can get up to where I see the Clover menu on boot, however when I select to install the OS, I get stuck on a black screen. I have never tackled this kind of project before, so I am entirely certain I'm doing something wrong along the way. I'm using a Super Micro X8DAH+-F motherboard and two Xeon x5690s. The GPUs that I am using are two Sapphire Pulse RX 580s and one XFX RX 480. I believe my struggle are coming from an incorrect config.plist, but again I don't know a whole lot about this process. If anyone could point me in the right direction or help me out, it would be greatly appreciated! Thanks so much guys :D