This is a fantastic project. I've played around recently with late-90s/early-00s PCs, and have used Plop 5 on CD to boot off the USB disks. If you use older hardware, keep a copy on CD - booting off USB is much faster than CD!
I am facinated by vintage computers. Computers from before that era feel exotic and unique but not so much for PC's.
To me a more modern OC does everything of an old one but more slowly. Not much to discover. Am I wrong or missing something?
I don't get nostalgic feelings from a C64 or Apple 2 or TRS-80 because I've never even seen one IRL before. For my leisure time I want to play with something I'm mostly familiar with, because that's relaxing. I would jump at the chance to score a free Amiga or other hardware older than I've ever used, but just haven't had any presented to me.