I have a Bridgeport Boss6.1 , a Beaver NC5 Mill (Bit bigger than a Bridgeport ) a Churchill Computurn 290 Lathe and I made a wee coil winder for a customer, although its me that uses it
I dont produce any specific products, I repair fishing boats mainly and use my machines for that.
One thing to remember about the charge pump is that in reality it is meant to be used to stop steppers jumping around when Windows boots and should not be relied on as an emergency stop type feature.
Afraid I have never used CNC4PC stuff so cant really help with specifics.
Again VFDs I have no experience with, my spindles are servo motors (stepper on coil winder)
Hood