I want to put a AirMax dry box off a floater on it.  Mount it backwards on the cart and run a pto hyd pump and pull it behind a 3 pt toolbar.  Box has 16 outlets and can handle a very high flow of fert at 10 mph.  It has Dickey John controls and can be ran directly with an Ag Leader InSight (which is already in tractor)

 I do not see height of box being a concern.

Already have a AirMax box sitting on blocks for this project.  If I ever get around to it! lol