A ball screw is best held in tension by Belleville washers to compensate for thermal expansion, one thrust race at either end.

If you lengthen the XY shafts at one end you can keep the handles.

Run the table to it's ful travel and ask yourself where the CNC parts are going to fit in the available space.

Experience tells me that being new to this you are very unlikely to believe this is necessary. You feel a compelling desire to see it cutting, don't want to go back to the drawing board now and spend extra money on machining screws. I only mention it so I can say, "Told you so" later on :naughty: