Sounds like a great idea to me!
But be warned, don't use emulators - for one thing, you lose all the nostalgia factor when using an emulator - a C64 just becomes a blue box in a window, but actually using the C64 itself is a different matter. Same with other machines. Also, copyright permission for ROMs is a nightmare with emulators, and probably a lot of hassle you don't need.
Good luck with it! If I were near I'd come and check it out for sure!