Owned a rear door for a few years, was o.k. but not good on a lot of caravan park sites, ours did,nt have a flywire door, the main door had a small pull down piece for a breeze to blow thru, not good.
Do as the travelling Dilberries suggested and have a good look at the van, make sure every works as it should,
personally I would never buy another rear door van,
Cheers, Joda.
If you are looking at doing the lap seriously consider buying a dual wheeler. Towing stability travelling long distances is a major consideration, there are even vans as short as 15 foot being built with this configuration.