1. You said that Naruto can't be Hokage because he isn't smart enough but Neji can be because he is smart enough. On the other hand, the data book gives both Naruto and Neji the same score in intelligence and Naruto outsmarted Neji during the chunin exams.
2. You said that you believe Neji has more potential than Naruto and Sasuke but Kishi forgot about him. I find that laughable though.
3. You said Kakashi and Gai have reached their peak but they certainly have not. In part 1, Kakashi was only a high jounin level ninja just like current Yamato, Kitsuchi, Kankuro, Temari, Neji, Darui but now he is a kage level ninja who shits on the ones that I just named so he improved in three years considerably. I think Kakashi will eventually end up surpassing Minato and Itachi and the same could be said of Gai. They still have tons of potential.
4. I think Neji and Lee will end up reaching the same level as Kakashi and Gai in their prime so I guess Neji could make a good Hokage candidate but Naruto will still be a lot stronger and just as intelligent. I find having a Hokage who only uses taijutsu rather disappointing and Neji doesn't seem like the type who will learn ninjutsu and genjutsu unlike what you said.
5. You said that you think that Neji already got a three man squad to lead. I think this is true and
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I made previously. It deals with whether Neji, Kankuro and Temari's potential at being squad leader went to waste or not.