A lot of good information above. IMHO a 2500 is way too little tow vehicle. If the dry pin weight is 3,300#, by the time you load up the truck and trailer you will almost certainly by over the rear axle weight rating in a 2500, and a good probability you may be over the RAWR in a 3500 SRW. You probably should be looking at a 3500 DRW as a tow vehicle, but that's just based on what I think you may load into this toy hauler.
As stated above, if the 2500 is the biggest tow vehicle you will consider, look for a smaller toy hauler. You may want to pose your question to the toy hauling forum, since they probably understand better what you might load and how that may affect the pin weight of a toy hauler.