I like your style.
You'll essentially be loading two torpedoes behind you. A hearse has something already in place for caskets. Figure out some tie downs to secure the loads.
I put rails/bunks in my Suburban, and tied the stern eye down to the tie downs when I hauled my ski inside. Heading to Daytona in 2018, we got cutoff in Atlanta. Glad I had it all tied down. We went from 76 to 0 as fast as I could push the brakes.
Now I have a front hitch hauler on my Suburban. I keep the beach cart in the front and the Ski on the rear hitch hauler. No more sand in the CAR!