Check with Steve to see if he is about for a beer once you reach the Dordogne - he's a top bloke.
This is a wild camp spot we've used a couple of time when catching late night ferries out:
https://www.google.co.uk/maps/place...2!3m1!1s0x47ddeceb3c7b9529:0xe5d43af850a150ad
Watch for this - I haven't come across it yet but I'm still wary:
Priorité à droite - the old French system was to give priority to all traffic coming from the right. This still applies at unmarked crossroads in the countryside, in small villages, as well as minor streets inside cities, etc. Most other road crossings have some kind of priority system implemented. Yellow lozenge signs indicate that your road is prioritary (all other roads must yield); a yellow lozenge with a bar shows ends this. Watch out; for drivers from other countries this is one of the most confusing aspects of French driving.
Make sure you have your V5 & Insurance papers with you - just in case you're stopped by the rozzas. I haven't been stopped in France but have in Germany where they did want all of this paperwork. It probably didn't help that we were in an old jag sovereign decorated with a christmas theme - but that's another story.
Don't be too wary of fixed speed cameras - I'm yet to receive anything in the mail.
Invest in one of the windscreen mounted cameras
... thats about all I can think of