If you plan to grow your outfit where you need a 26K Gross Combined weight rating, I say it's time to just bite the bullet and get a CDL. I got mine and I tow with a Durango! I rarely go over 10K gross and am eyeballing a new HD, but if I ever need a larger truck than that, I don't have to wait to go over 26K.
Class B is useless, unless you can find a used school bus in decent shape and convert the back 20 feet to flat bed space and throw on a pintle hook. Even then you'd have to take into account any tight turns with the 'school bus effect'.