Putting a Delta Servo on my 4th Axis

Using Delta because I have read nothing bad about them at all. My 4th Axis is a 1/60 ratio and needs a bit of torque to run it as well. So a 1.5kw motor @ 3000RPM is what I have been offered. I am running Mach 4 with the ESS which has been quite stable for a long time.

Driver ASD-B2-1521-B

Motor ECMA-E21315RS

These are the components I have been offered. I guess I am here because this is a collaborative environment. If I am making a bad decision this is the time to let me know. ha. Currently using Nema 34 Steppers for the rest of the machine. They are just a little slow for the 4th. I have setup lots of steppers, and many VFDs - but I may need some help with this servo. Thanks in advance.