Hahaha. I see you’re being down arrowed a bit… But I was thinking the same thing.

Reason I was thinking nixos was because op was talking about " flipping switches" they couldn’t flip back. Nixos has that sorted out.

Plus… It sounds like op isn’t afraid of trying new and possibly difficult things on a new server they’ve acquired

The truth is that proxmox is likely the best option here. But nixos could be a fun ( type2 fun) challenge if they’re into that kind of thing