About the motor.
I don't know how realistic that could be. The data i mean and if it could serve well. Somebody has already tried it? For that purpose? Do your research there. Dont believe what chinese sellers say, cause mostly they don't know a sh*t about what they sell.

I would believe a similar Panasonic one/ what seemed the right one to me, look at the description/ would be jump in the known, not the unknown. Or just search more to find something more suitable for what you want, brand name.

Ask the seller of the spindle if he knows of a suitable motor. Ask linearmotionbearing , bstautomation and any other seller who seems credible and then decide.