Well i personally think dat he wont go kyubi but will get the red eyes like when they are waitin outside the layer to save gaara. And also if kakashi cant use his 'way with words' yamato will just have to step in and seal the kyubi's powers or just stair naruto down with his sary eyes...!
if naruto learns hes of hokage blood line it will make him want to get stronger and surpas even his father and jiraiya and want to take down pein 4 sending akatsuki after him all those years