That being said, I use a plunge router on my small portable table. I have a cheap set up but I can do anything for a guitar that I want on it. It is smallish so can flip it over to do the adjustments. It usually takes the most time to get it set exact. It has a safety cap to stop the bit if it breaks.
Get the height set with these controls first. It is easy with the small table because I can push it down and measure on my lap.
Once it is to the correct setting, lock everything in place with these bolts. Routers are notorious for vibrating loose with the plunge stop only.
Also, set the bit in the collet as deep possible to start. Then it can't move on you either. For what you are doing, and with your setup, you want a good bit. Like this:
A narrow bit will cut faster. These bits are not very expensive and last a good long time. Use like this:
for the truss rod.
