I'll place my bets on the team Shikamaru will thus form.
Lee as the cornerstone of the team and Sakura replenishing his reserves and dispensing him with nearly unlimited chakra, the rest of the team helping out, Choji, Shino and TenTen essentially handling all the other paths besides Deva, I can see Pain being pushed on the defense.
It will require an extensive plan though, but I trust Shikamaru would come up with a flawless one, considering he devised an impeccable plan to defeating Hidan and it didn't take him more than a day to do that, and he's wittier now, so he's x2 faster at thinking up plans than years ago. Hence, a plan will be formed quickly, with Lee being at the forefront, or being the ace in the team, Sakura helping with healing the teammates with Katsuyu spread across the field, but is put close to Lee to revitalize his body if he's forced to open the 7th Gate which theoretically speaking he should have. Choji, Shino, Konohamaru, Ino, Tenten, Temari etc. should be enough to handle the paths.
Teamwork is vital for a victory, made possible by Shikamaru's leadership and quick thinking, and Lee's raw power.
Wait, this is just the kids? If the adults are excluded, then no, there's no way they can win.