I agree with Koffee, do too much and your tour turns into a grind and you lose the whole point of the experience. Confine yourself to an area that you can spend the time to explore and savour.Only that way can you expect to know something of the place and people.On a short tour (2 weeks) a region is sufficient.If, like me you are retired and can spare a couple of months, then wander over all of France (2000-3000 miles).There is nothing better for cyclists--even including Italy. Good cycling!