Great to see the love for the good old Commodore 64. 
I wish them all the best and it’s a good start. Design-wise there is room for improvement, especially with some of the radii and of course the keycaps.
It’s got to be either MT3 or the original set. Cherry/OEM would not work for me.
But seeing how long this project has been underway it might take a very long time.
Edit: Being inspired by the IC, I wrote down my journey of my Commodore love inspired project here.