Thank you. That answers my question.
With what you said plus the tip from Ger21 on using a gear reduction (if needed), I feel better about the deal on some 20mm pitch ground ball screws that has been made available to me.
It's all coming together. I kinda wish I could pass some of this info back to myself at the beginning of the process. It seems like the largest potential cost in a diy build is changing your mind on the design and having to buy the same parts twice... I'll literally have enough parts for a second build when the first is finished....