Max grade is found on MotionBased by clicking on elevation on the left side and in the center column column it gives max % grade for both ascent and descent.

As far as the display on the unit, you have 2 pages of display and can put 8 things on each page. It's easy to toggle back and forth using the arrow keys on the side of the unit. So you can just put 3 or 4 things on each page.