It can be run with a single graphics device. Just SSH in, then after you've done the other configurations and added the GPU's PCI ids to vfio-pci, create the V

It can be run with a single graphics device. Just SSH in, then after you've done the other configurations and added the GPU's PCI ids to vfio-pci, create the VM with virsh, attaching the GPU. Run "virsh autostart [vmname]", and it'll spawn automatically at each boot. If you need a host with graphics, you can always unbind the GPU from the host and allow it to be re-attached to VMs if you don't need a headless hypervisor. I know I've seen a few small bash scripts on github for reference.