I was driving, not riding, but found it relatively simple. Roundabouts are strange to start with but do make sense very quickly.
The French have no patience so be sure about your manoeuvre & speed BEFORE you start it, they will quickly be behind you or at the side of you gesticulating wildly if you falter or aren't as quick as they think you should be! Which can be rather disconcerting.
The Toll Roads are boring as hell, but are fabulous for getting places quickly, which is well worth the cost.
The roads in general are very quiet (towns and cities are interesting) and oh so smooth and well maintained
Coming home to Blighty really made me wish I hadn't bothered. Packed roads, major traffic jams and bloomin awful road surfaces, pot holes everywhere!
Enjoy your trip.