In light that not many people tow with this setup I think you would do well being receptive of any and all advice. Rarely if ever do you get the exact answer to your question. Even if you do are you really going to base any decision off of maybe ONE response that meets your exact conditions?
Many more people have experience towing with a 2500 pickup with the 6.0L. Same engine and transmission as what's in your van.
As long as you keep the trailer within reason you should be just fine towing. A trailer that's 7500lbs or so loaded and ready to go camping should be a nice easy comfortable tow, without eating all the payload capacity of your van. A trailer of that size and weight should suit the needs of most families.
This of course assumes you have a standard length van that is NOT a "conversion van" with 1000's of pounds of fluff added, OR a 12 or 15 passenger extended van.