Posted on 12 Mar 2013
We didn't do what you're proposing but we have a VW camper and found that most of these on offer have pretty well everything provided within them - it does obviously depend on the converter. The only additional bits we needed (being new) was basically outside stuff like picnic table/chairs, additional two hob cooker so cooking outside in nice weather (we do Europe a lot so have found nice weather.... ;-) ), sun loungers.
Obviously space is at a premium in smaller vans so keep it to what is needed, but we've travelled up to six weeks at a time, staying all the time in the van as far as S Italy and Croatia and not needed any additional kit.
Good luck - the drivability and ease of use of a small van is great.