Replaced plywood tool plate with 1/2 inch PVC. Drilled starter holes with the small machine, then larger ones using the drill press.
Next, ordered 24V power supply with enough amps for steppers and rotary tool. Also ordered a steel frame to replace the desk. That should make for a very solid tool stand (36x36in top). Once this arrives, I will rebuild the machine from ground up, making everything just a little bit better.