It is high... need a step ladder to rig it up. The storage is beyond fantastic... so that would be your tradeoff if you drop the height of the box. The storage is certainly enough to put all of your gear during off season.
The moto mount is a nice to have... and keep in mind, its fully removable. I got it for the day I do a solo run... maybe will never use it but it seemed like a reasonable add-on to have "just in case". You could also potentially use it for a regular bicycle if you really wanted to.
I added an additional receiver hitch on the back of the trailer so I can throw a bicycle rack on the back for the family. I'm taking it to Moab next week to run the Daily a couple of times and it would be a sacrilege to be there w/o Mtn Bikes
Randy charged an additional $25 for that. I can upload a pic of it with the rack on it if folks want to see it.
I got LED lights as well which is a $35 upgrade. I didn't want the maintenance headache of bulbs burning out.
I do have a big recommendation for you since you appear to live in CO. Getting it registered and licensed is a major PITA. The CSP has to do a VIN Inspection and officially "certify" it. If you know about when Randy will have it ready for you, make an appointment as soon as he knows the date. It took me a month to get an appointment. A day before your appointment, you need to go to the DMV and get a temp license for about $6.22 so CSP doesn't ticket you when you show up. Also, you are best off doing the "Home Built" route for the forms you fill out instead of a bill of sale. The ladies at the DMV said if I pushed it through as a bill of sale, the State would have kicked it back and I would have had to do it over again. Others may have been successful that route, but apparently the home built makes things go a bit smoother (which is what they told me).
Finally, I would ask Randy for a cheaper "side" invoice for the DMV... you will save a bundle on sales tax with that