Kakashi will be the 6th Hokage, and train Naruto in the responsibilities of the role. After Kakashi retires (say 10 years or so), he will hand the title over to Naruto, who will train Konahamura. After that, I have no clue.
If canon, a couple things we know:
-Neji really is dead-dead (unless you can think of another character who could be Hinata's daughter's uncle.
-The Byakugan wasn't dominant to Naruto's kid (gay as fuck what is this bsssssssssss)
-Kishi really is a terrible writer
Btw-- if it was never really clear I've never been a NaruSaku FAN, so much as someone who thinks it's comparatively better chemistry than NaruHina (which if meant to be romance is just terribly written).