Well done on completing the hardware build, looks great. I guess that is of course 3/4 of it, because you do still need to map the buttons for layouts, particularly those that don't have standard buttons. I would imagine that the older techs, without lots of buttons, might be the easiest way to start. It's not until you look at these things, you realise just how many different configurations there are.
Anyway, really looking forward to the videos, not only any build one, but also seeing some sort of front end and machines being played.