You’d probably be better off picking a normal distro and then running QEMU to run Windows or other VMs. Proxmox is more comparable to VMware ESXi in that it is designed for running server VMs and managed through a web ui.

When you say you want to use proxmox as your daily driver, what sort of things are you wanting to do with it? Are you going to be spending most of your time inside a WM, and want to be able to switch to a different VM? I’m struggling to see your use case.

This sounds like a job for a raspberry pi 5 with an m.2 hat for storage, software is a less important choice here, so ubuntu’s raspberry pi flavour would be my choice. Just make sure you give it power in a form it likes.