Please advise on stepper motor selection

[Allison]

I want to make a pump for a custom espresso machine, with the focus on controlling water flow rather than pressure. I will use a piston (I first tried a 40mm cylinder) and push water at about 1ml/s. The pressure is high, so I'm thinking of using a ball screw to push a 6:1 lever arm. I need to know which stepper motor would be good to use.

So... I need a motor/gearbox/ball screw to push a 30kg load, at about 3mm/s, and a distance of 250mm (these numbers are somewhat adjustable, I can increase the load and decrease the speed, or increase the distance and speed with a decrease in load)

I think I'll use a 1mm lead ball screw...?

Can I use a Nema 23 stepper motor (https://www.oyostepper.com/category-7-b0-Nema-23-Stepper-Motor.html)