Good luck to you if you can make this work.
However, we have spent the best part of three years looking into moving to France with our two children and after much expense and research have come to the realisation that setting up and running gites or chambre d'hote will not give you the income you need to sustain even a basic lifestyle.
In February this year, we found the ideal business south of Limoges - in the tourist industry but not accomodation. However, after putting together business plans, and getting the truth out of the French owner we decided not to proceed.
We also took advice from several friends and other expats trying to make a living and the only ones that we found who were making enough to survive, were those without children.
I don't want to be negative, but unless you are fluent in French and close to an industrial area, where you may be lucky enough to find some form of work to support your business whilst you build it up, then do think very seriously and do your homework before you dive into this.
Good luck, whatever you decide to do.