Unfortunately, unless someone has an identical van of that age, any comments are going to be not really relevant. Possibly the Eccles Owners Club could give some more pertinent information.
Really the choice is yours. If the van is in good condition, no damp or major problems and you like the layout and have a suitable towcar, then really the final say so is yours. If you have a friend who has, or is a caravan owner then get him/her to have a look to get a second opinion.