Naruto probably wont be fighting Itachi because Naruto cannot look into his eyes (making Naruto have a large disadvantage)... Only someone with the Uchiha blood can look into his eyes. The story starts off with Sasuke having an ambition to kill Itachi. It'll be ironic if Naruto kills him. Sasuke probably won't forgive him for killing the Uchiha clan and his parents.
Naruto probably going to kill that Hidden Mist guy.