I'm looking for some advice on sizing my motors and drivers for a CNC router that I am building. My machine consists of steel and 80/20 extrusions, with a 3'x4' capacity. My gantry will weight approximately 150 lbs. and I am utilizing 20mm linear rails and 2010 ball screws on all axis'. My plan is to use a Milwaukee 5625 router to start with and I plan to primarily cut wood and some aluminum. I was originally thinking about nema 23 570oz. motors and leadshine DM556 drivers. What are your thoughts?