my Naruto theory (in the right place)
i think that the toad sage's training will work, and Naruto will be much stronger than before, but during his training Sasuke and Hawk/Eagle will be collecting the last beast, the 8 tails, of course they need the nine tails, but naruto will be away when they look for him. Pein, Madara and Konan are using Sasuke and the other members of Hawk/Eagle as pawns but Sasuke said that they're using Akatsuki as pawns. (of course in the end i think they will both end up fight each other) and if that happens then i think only Sasuke and Madara will survive, then they will both attack Konaha and most likely kill Tsunade (leaving the Hokage position up for grabs) Sometime around then Naruto will finish his training, i think then Madara will somehow die. then the final battle, Sasuke V.S. Naruto. and of course Naruto will either kill Sasuke or imprison him. then Naruto would be Hokage thus finishing the two main stories-Become Hokage, and rescue Sasuke. i think then there will be a short story afterwards and then Naruto will end. if my theory is right then we will be seeing the story end around Ch. 450-470.