A 2500 truck is 3/4 ton, so the truck is adequate.
Depending how much space the reclaim equipment requires, you will be tight on space in a 16 footer.
I have a rectangle 330 gallon, which measures 50" long X 43" wide.
Figure almost 4 feet for each tank, and 4 feet for your machine, and you have only 4 feet left. By the time you include supplies and suface cleaners, that space goes fast. I don't know how much space a reclamation system would take. Mr Alan can answer that.
It's easy to outgrow a trailer before you know it.
Of course you can put some stuff in your truck to garner more space in the trailer, but don't forget that stuff in your truck bed also counts toward your max GVRW.
Just trying to throw thoughts/ideas out and about.