I've pretty much managed to get everything sorted, but fell on my face at the last hurdle.
PCI passthrough of the graphics card. Running an Arorus Gaming 2 which has all the PCI lanes grouped, meaning I can't separate the cards.
Oh well pretty happy I made it this far. Would be pretty happy LTT listed the actual components they used in the build as I think this would be my preference from building hacks on Intel in the future.