I think Naruto is pretty far from wrapping up. I would guess maybe another 100-150 chapters. It would be nice if it didn't go too long though. It seems like the story line is being stretched for the sake of better business. I don't want to see Naruto become another Inuyasha but it could very well make it to that point.
actually, im not so sure. i mean kishimoto can choose sasuke to kill itachi, or he could choose for itachi to kill sasuke. he can choose the akatsuki to take naruto, or he could make naruto and the rest of the team destroy them.
its all his choice.
personally, i dont really know. anything is possible.
There is still room to develop other characters, which did not have much spotlight since Part 2 started e.g. Team 8? And the Orobuto (whatever) thing hasn't been settled yet, so I would say it's far from ending.