I’ve trying to move my main desktop over to Linux for years, and getting a Steam Deck was the last thing to convince me. It’s been about 8 months now and I won’t got back to Windows.
The only exception is the few Forza games I “own” on the Microsoft store, but that’s around every other month at best. Really hope the popularity of the Stream Deck can get support for them.
I would suggest looking at OpenStack and KVM or XEN for the hypervisor.
You also have Proxmox.