Great venue, and should be good in oct/nov unless you get rain/seepage....
Lots of great routes onn teh south face from 17m power endurance (think malham catwalk) up to 35-38m euro stam fests
South face obviously gets loads of sun, but the east and west faces get plenty of shade in afternoon/morning respectively. The new sector further along the south face (another large horseshoe) has some amazing looking lines which will get lots of shade, but i'm not sure of topo as it has only just been developed.....
Dossing in a van is easy, but not in the car park closest to the crag. Drive past the turnoff to the crag (heading east) and through the village of St Leger du Ventuox, once you pass over the river there is a large gravel car park (don't park on the tarmac area) on the right, with a picnic bench, water tap and long wooden work surface between two trees. Its fine to doss here, and you may even get early morning bread deliveries from a french women in a van if your lucky....
Drop me a PM if you want any route tips/recommendations etc....try 8a.nu for pics....