I'd like to bring one point to light that caught my eye --
You are moving up to a larger trailer -- Depending on Sponsor Dollars -- This indicates to me that you may have a race car.
If your hauler is registered as a motorhome -- You may be challenged by the intended purpose of your setup.
Sponsorship and/or prize money -- I believe will necessitate a commercial tag on your setup -- Along then with a CDL.
I'd check with your DMV before I'd go much further with your intentions .......
Dave