Hi and welcome

We would love to see your van, any pics?
You could spend a fortune on a restoration and never get what you put into it back and I would only suggest you do restore it if you are keeping it and let the new owner do their own thing. But a good service would give the new owner some confidence in driving their new purchase home and enjoying it.
I can only suggest the usual places to put it up for sale - on here would be a good start as we do get people asking if there are any for sale then ebay, Car and Classics and if you can stand the inane comments and useless advice maybe Face ache. Good luck whatever you decide and please let us know how you get on.
Cheers