I do NO gerber output. Pcb-gcode directly exports gcode file(s). You can set it up to do files for top and or bottom for drilling, etching, milling etc. It will do it directly in metric if that is the unit system that you have chosen to use.
As your system has "warp", the files will be ready to run. No further cam work will be needed.
I don't think there is a pp for your controller yet, but it should not be to difficult to massage one of the existing ones. I personally use Turbocnc and have mangled the heck out of the stock pp's:})