@Gazeley @grumpy
I followed this build and have had my server up and running for 8 days now. The one thing I'd note is that the m.2 SSD is Gen 5, but all the m.2 slots on the motherboard are Gen 4. Other than that the build went pretty smoothly. I haven't installed the sata controller or network cards yet, but I did install an Intel Arc B580. Unraid 7.0 isn't supporting it yet, but I was able to pass it through to a windows VM and install the latest Intel Arc drivers and get it working there. So far very happy with my experience.