x79 extreme4

Hi! I'm looking for help to install High Sierra in my PC. I have tried many times but without success. Hardware list: Intel i7 3930k Asrock Extreme 4 x79 Vengeance ddr3 1333mhz Nvidia 1080 GTX Samsung ssd 830 Thanks for your help!

Following ksosx86's thread on his X79 Extreme4 build I've got Unibeast on my USB stick, and replaced the 'Extra' folder with the Unibeast Extra.zip folder he kindly attached (so I don't have to disable multiple cores / hyperthreading etc.) For some reason it hangs almost immediately when I try...