Wouldn't fit 2.2Kw to this machine has the Z axis is too weak to handle the weight and the machine can't handle the extra capacity the spindle allows Ie 12mm cutters. 1.5Kw spindle are better matched.

For the motor/drives and PSU then you can use 2Nm motors and 50V drives running motors around 44Vdc. BUT if you want spare capacity for future upgrades etc then use 3Nm motors on 70-80~Vdc drives running at 65Vdc. Slightly over the top for these machines but better being over spec'd than under.