So after having the X2 CNCed for a year now I need something bigger. I have decided to go with the RF-45 and I want to do it right this time. I am looking at the Keling KL34-180-90 1125oz Servo motors, the Gecko G320X Drivers, CNC4PC C11G breakout board. but I'm not sure on what else I will need for electronics. Do I need encoders? Would it be better to use Stepper motors?