The plan was to spend a week getting down to French Rivera, spend a week there and then another week to get through Italy to Sicily. We essentially managed this.
In France we had stopovers on route to the Riveria in Mont St-Michel, Saumur, Puy du Dome, Langogne and Arles.
In Italy we had stop overs in Cinque Terre, Pompeii and Amalfi coast (brief recce).
Those of you interested in the detail, stopovers, mileage, costs, etc click Route to Sicily
If it’s not clear(!) or you’d like more detail let me know.