Having been overtaken more than once by European scooter riders on their up to 600cc scooters, anyone vertically challenged should at least have a look at what is on offer. All the comforts, low seat height, easy to manoeuvrer, automatic, more widely available and lots cheaper - the list goes on. You certainly will not be alone tearing up the Alpine roads or bimbling the more gentle parts. What ever bike you choose, your averages will be limited by terrain and your ball size. Most of us with a wide range of bikes end up averaging similar miles per day. Get your self to places like Nice, Monte Carlo or Menton and you will be left for dead by every local on a scooter (it will feel like they have imported a few thousand every rush hour), teenagers, millennials, middle aged, grandma's and pa's. You will be in the biggest group of two wheel riders. By far. As far as a licence is concerned, if you have a M/C permit, then you can get an International Drivers Permit - IDP - which is a translation of your domestic entitlement. Get one from your local automobile association. Make sure they check the motorcycle part. Only lasts a year, cost a little, but priceless if asked for and you don't have it. In over 40 years, I have only ever been treated with courtesy while on a bike, cars pull over to let you pass (unless tourists in hire cars and campers). Phone use while driving is outlawed, although the occasional miscreant may be around, they tend to be a bit more careful. Drink driving is heavily penalised, prison, confiscation of vehicle and its potential destruction tends to keep many drinks where they should be. Some countries have on the spot fines for speeding. A hire bike will not save you. In most of the places you are likely to be, finding food and accommodation is as simple as stopping and parking. More resources than you can shake a stick at to help you - both online or f2f. Even on here. I tend to use cheap chain hotels on liason stages, usually renting an appartment at our destination. Lots of both in most places or a short detour. There are more back roads than you can imagine, a lifetime is really not enough to try them all. Many are not mentioned in any of the guide books mentioned. Most are only used infrequently by locals. Googlemaps does not show them all, you have to be there - then make the decision which to take.