Z-Axis mod with AEG/Ridgid router

I’m a fan.
This is the best I have come up with:

I am loving @TomD 's topic and @c0depr1sm 's input.
As much as I would like to build a meticulous z axis I feel like this is more my speed using what I already have to its best capacity.
Honestly I’m tempted to use an old Black & Decker router that has rack and pinion depth adjustment on it with a knob that could be replaced with the motor. What do you guys think?