300W Mitsubishi AC servo motors and drives

Hi I've got my AC servo motors and drives 3 sets, all 300W, but kind of
regret I should have bought bigger ones. The continuous torque is
around 0.9 Nm only according to spec. I am wondering if it's enough to
motorize X and Y axis of my knee-type mill. I will make pulleys with
ratio around 3:1.

My ball screw dia 36mm lead 10mm. for both X and Y axis. My mill 2hP
knee-type bridgeport copy. With these motors what best jobs can I do
with my CNC mill ? will it comfortable to mill 3d shapes on Aluminum
blanks ?

Any helps would be appreciated.