It looks like a lot of work setting this up. Obviously it is a hobby thing as well, so I get that not every second needs to be 'productive', but it doesn't need to be this complicated.

I ordered an Anbernic RG35XX H a few months ago for about 60 euros and although it can't really handle playstation games, it does everything else. There are devices like it that can handle Playstation and N64 games though. I'd recommend this if you actually want to spend time playing.

Bonus: it is portable