Another cycling website that helped a lot with the planing (in french)
http://www.eurovelo6.sitew.com/Infos_pratiques_Avant_de_partir.B.htm#Infos_pratiques_Avant_de_partir.B
http://www.eurovelo6.sitew.com/Infos_pratiques_Avant_de_partir.B.htm#Infos_pratiques_Avant_de_partir.B