You have a 1/2 ton truck or bigger? Just get the trailer that fits your business needs.
If still skeptical about towing, you must know some people with trailers that you could tow around to ease your concerns.
I'm close, you can try with mine, but my trailer is 32' so not real representative of what you want.
Seriously though, they all pull similarly with respect to general size. Make wider turns, always watch the trailer wheels in tighter turns, keep a little more following distance and that's about it.
FWIW, trailers are silly expensive in the Seattle area. Expand your search and figure in the savings of traveling somewhere to buy the trailer.