Work station height

I have the X-Carve 4x4 machine and plan to build a 6 foot by 6 foot table. Does anyone recommend a good working height? Counter top height 36 inches?

workbench height set per your body, such that standing with elbows at 90 degree, your hands rest on the wasteboard.

I set all my tables to the height of my table saw. Should I need out feed tables or if is ever need to repurpose my tables they are the correct height to use with my table saw