Decided on this speed controller from Solutions Cubed to steer the MK from the HDS Track Output capabilities.

24V 3A Serial Motor Controller | Solutions Cubed, LLC

I will be using the Parallax BS2e PIC controller since I have several sitting around collecting dust.

I have some code written and but am waiting on parts to build the circuit so I can test code out.

I am trying to buy as much OEM stuff as I can so I don't have a lot of wiring to do. Getting lazy I guess.

Fun and challenging project.