Tony is right, the Canal du Midi is a very nice ride. If you want more mountains, you can ride around the Parc National des Pyrennes" also very scenic but no beaches and not much vineyards.
It is definitely possible to turn your MTB bike into a touring bike. It is not the best option but it is certainly cheaper than buying a touring bike. For example, you may have an aluminum frame, which in my opinion is not ideal for touring, but is certainly good enough for a 2-week trip. According to the general consensus, many people have traveled on bicycles that were really not suited for touring, yet had a blast and an overall wonderful traveling experience. Bicycle touring is all about fun, sport, and adventure. The machine is simple, so there is no point in making it complicated.
That being said, to make things more comfortable, this is what you might want to consider changing on your MTB bicycle (more or less in order of importance):Racks
: I assume you don't have racks on your MTB and this is something you will need. I definitely advise against touring with a backpack (very bad for your back). For the best balance, it is preferable to have one pair of panniers on the back rack and one on the front rack. But if you have a limited budget, you can just use a rear rack with 2 panniers and a dry bag on top of it. The most popular brand for racks is Tubus
. Bruce Gordon racks also have good reputation. Most racks need mounting eyelets, but you can find a few models that do not. If you don't have mounting eyelets on your fork, and since you have suspension, a good option is the Tubus SmartiHandlebar
: A big difference between a MTB and a touring bike is your position. MTBs are designed for a more sitting-up position, while the touring bike is in between the MTB and the road bike position. Sitting straight up on a loaded touring bike for several hours per day will be hard on your back and is bad for your spinal discs. So two weeks is not too bad, but if you have back problems you might want to change the handlebar to allow you to change positions and to allow you to rest a little more on your wrist than mostly on your bottom. You have different options: drop-down, bull-horn or butterfly handlebars; every biker has his own preference. I personally prefer the butterfly. A great but expensive handle bar for that matter is the Modolo Dumbo
, it is the only handlebar that give you so many possible configurations. A cheaper option is to simply add bar ends to your straight bar, but it doesn't give you as much comfort.Tires
: Your tires are probably way too slow for touring, especially if you're planning to ride on asphalt, so you probably should trade with some slicker tires. Schwalbe is by far the best brand for touring tires and here you can compare each model easily: Compare Schwalbe Tires Trailer
: This is another option if you don't want to have to deal with mounting racks. Some people really like them, but if you will be taking the airplane, it might not be the best option (it is already a pain to check in bicycles, so an extra trailer won't help).Mirrors
: This is a cheap but VERY useful item. Heinz Stucke once said, "Helmets should not be required, but mirrors should." They surely add a lot of safety and are very practical. Here is a related article: "Why do I need a mirror for bicycle touring?”Gearing
: The gearing you will need depends on your condition, the terrain (how steep it is going to be), and how much luggage you'll be carrying. I assume that for a 2-week trip you won't have much more than 60 lb. (and more like 30 to 40 lb.). This is the range most people choose: 48-36-24 or 46-34-22 with a 12-32 or 11-30 cassette.Saddle
: Again, every biker has his own preference, but the majority of bicycle travelers choose a Brooks Saddle
for the comfort and durability (you need to break them in, though, so the first few hundred miles won't be so comfortable.).Fender
: A fender will protect yourself (and the one following you) and and also prevent your gear from getting wet or covered with mud.Rims
: Again, for a 2-week trip, it might not be the most important issue, but if you plan on carrying luggage, you need a strong rim (SunRhyno) with preferably 36 spokes (the best spokes are the Sapim Strong with brass nipples).Lights
: It is easy to get caught at dark when bicycle touring, sometimes it takes longer than expected to get to wherever you're going or to find a spot to camp. It these cases a bicycle light is crucial. Here is the link to compare bicycle and camping lights
Hope it helps. Happy wind and be careful with the red wine!