I have to agree that it is a bad time to try and make it with a cargo van. Just think--Ford and Dodge don't make them any longer, and Chevy/GMC are about to quit.
Shippers are now looking for the SPRINTER type vans. They now want the height, and in some cases, the width that these vehicles are offering. Yes, there are loads out there that fit into cargo vans, but they are becoming fewer and fewer.
If you still want a vehicle that does not required a CDL, one option to consider is a cut-away with a box on the back. Usually cheaper than a SPRINTER type, but still a nice vehicle. Consider buying a used one from one of the fleets/rental companies. Usually well maintained and not a lot of mileage. The height of the vehicle works to your advantage.
However, don't fall in with the "cube van crowd". We all know who I am talking about--those carriers that only hire the foreign drivers who live in the trucks, who undercut the rates to keep the vehicles driving. Be professional, keep the vehicle neat and clean, and just as important, keep yourself "neat and clean". You'll be able to make it.