Having very recently been through this process my I advise would be just stick it on Auto trader
there are lots of good people out there who want to buy a fairly priced van directly from the owner just like we all used to do
you will get roughly 30% more selling privately and if priced correctly it should sell quickly
Priced mine fairly it sold in a few days to a very nice couple who was so happy to be the new owners
i am looking for my next van now and so wish more people would sell privately