Hey, sorry I was having some issues with my job. I'll be able to update the guide very soon.
As for the UEFI boot, you need to make sure you have UEFI boot selected in BIOS.
Additionally, if your EFI folder doesn't have /EFI/Boot/BOOTX64.efi , it won't load the Clover without custom-defining the path.
Herve, thank you for pointing out the errors in my config file, I will fix them ASAP.
I had based my config off of the M6800 one, so that would explain the first two issues.
The SMBIOS configuration is because I would get a black screen whether or not I was using discrete vs. onboard. Changing to the odd profile fixed it.
When I get my machine up and running again, I will see to these issues.