As for your electronics wiring, read the documents as best as you can, wire it as best as you can, and BEFORE you apply power to it, post a few high resolution photo's here , and any documentation you have, to let the guys look at it.
I actually prefer to use Mach3 for 3D printing, you should be able to find info on this here, our experience on it is here 3D Printing on a CNC Router Mach3 Emc
and here https://www.rockcliffmachine.com/3d-print-guide-cnc/