Larson,
I have to agree. I am often amazed a what otherwise intelligent people will connect up as a trailer set up.
I race cars, and tow then all over the NE and Canada. We see some scary tow rigs.
My original advice stands: If you are unsure, go to a trailer / RV shop and get some help. Yes, their products may cost 10% more than an internet store, but the value of their knowledge and help will far outweigh the cost difference.
I still can stop by the shop where I bought my firt hitch and get assistance when needed. That, as the commercials say, is priceless.
If you ar in my area, the shop is Southern Tier Trailers Sales in Jamestown, NY. Good shop. They do utility trailers and bobcat sales/rentals.