Not sure what the Frame means with any of this. It’s going to be running the same stack as Deck, which is KDE. It’s also not going to be any sort of headset for your PC, at least at the outset.
As for your other Dr questions, it’s all just personal preference. The Desktop is just window dressing on a compositor and window manager anymore. If you’re comfortable without all the system helpers and convenience of using either Gnome or KDE, you can just run a WM like Hyprland or Sway instead.






This is just basic network routing and subnetting.