Good news! I figured I would have to purchase some micro limit switches. No need. All three axis have a through beam like sensor attached and already wired up.
Wiring is already beautifully handled all through cable track. All nicely tucked away and protected.
There’s also a nice little panel in the corner of the frame. I may install the Arduino / RAMPS /Stepper Drivers module inside this box. All the steppers and limit switches are currently wired to the round jack. The DB25 looking pins are all hooked up to small control box on the Z-Carriage that I’m thinking about removing.