Nice project. I think it's too difficult to make the string vibrate at the correct frequency, they will need too much tension or will be too prone to break.
I was expecting some software that analyses the vibrations, and increases the frequency and create the sound. But it would be a much more difficult project.
Thanks! And yes, having this work like an actual guitar would have been a nightmare. Plus, people were just MURDERING those strings. It would have been impossible to keep it in tune. Plus, there's no way you could actually fret a chord properly since the first fret was 10 feet off the ground.