Is the original Wanderer roof totally beyond repair? Bernie had similar problems with Gladys and effectively rebuilt the roof - all documented here of course: http://forum.commervanfan.co.uk/topic.asp?TOPIC_ID=5557&whichpage=1
Although the Autosleeper roof is probably a better roof, I still think the shape of the Wanderer roof, with the three side windows suits the Commer best. I am not familiar with the later carcamper roof. Unless you are less than 5 foot tall, I would opt for an elevating roof of some description!
who do you get your film work from, is it an agency that you have to join. I wanted to start getting into this area with my panel van, so it could earn its keep.cheers