Well, the height depends on how level the floor is and how much you have yo raise the leveling feet.
My Mill is an inch from the Y stepper that sticks out to the wall. The back of the column is approximately 11.5 inches from the wall and the back of the Z stepper is approximately 18.5 inches from the wall. I could not measure my height, my mill is boxed in to a corner with a wall to one side and a lathe to the other.