The Ultimate is nice because it's easier to load than the rail type setups, and holds the bike solidly by the frame & pegs instead of thru the suspension. It's also useful as a field workstand. The optional gas can mount is also nice for SUV's.
I would get a hitch hauler first, and take it and your bike to a welding shop to have them figure out a good height to place the receiver. You would want it as low as possible I would think for visibility.