Don't sell yourself short swing up the valley for Chatel to Abondance back to Morzine then the Juplan to Samoen to Cluses then back to Chamonix ...and put some effort into it!!!
You start at the foot of Mt Blanc and then work your way over 2 passes to Switzerland. Great scenery, great road--- but just try to avoid during peak tourist hours. Plenty of straits to sort out the camper vans as they appear on the horizon.