I think with all of those, the team has an excellent chance. Neji's rotation should be a whole lot stronger than it used to be, Lee has gates, we know Sakura's poisons work, Choji and Sakura are strong enough to hit and make it hurt, and there's a lot of distractions going on here so Naruto should have trouble keeping track of everyone at once.
I doubt the shadow could hold naruto, especially with the kyuubi power, or sage mode. also, he can have thousands of himself at any time he wants.
Even if Shika can't hold him, he can likely slow him down.
And while he can do lots of clones, he can't while doing sage or kyuubi.
In sage mode he pretty much cannot be harmed,
Both Hyuga can cause internal damage, Choji should be strong enough to hurt just about anyone, and you've got Sakura's poisons/drugs.
Gated Lee can likely cause damage too. It wouldn't surprise me if he can go 6 now for that matter.
and with kyuubi mode he is faster than anyone there. including lee with his gates. (an assumption sure, but a fair one)
But he doesn't know how to control that speed, unlike Lee.
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My money is on the team. While power does matter a lot, groups of skilled ninja are still quite effective, and Naruto can't use all his powers at once or anything.