complete conversion kit for AMA25LV

[fifa]

Good day Jon

Leadshine is far to expensive for hobby machine like that. Machine spindle is not capable to do HSC, limit yourself for federates up to 2m/min >>ballnut drive = 400 rpm. More than enough.
Any step motor driver with at least 64 steps can do approx sine curve, means you are on the safe side against resonance. Chose the motor which has enough torque also at highest speed, otherwise you will loose the steps.
Backlash do not depend on the "C" class. It depends on the nut. For "diy" variants it is much cheaper to instal 2 nuts per axis (additional costs ca 30-60 GBP ) and pre-stress them for ca 10% of nominal load. Prestress ration can easily be checked with compactor and spring scale.

regards