Why?
shino solo's kankuro
neji + hinata take on temari.
ino-shika-cho handles gaara. the rest are there for back up
I respect your opinion but if Shino had trouble against part 1 Kankuro and could only stalemate against him, how does he beat current Kankuro who also now has Sasori's puppet? Hinata get fodderized effortlessly because she does not have rotation. Neji needs to cover a gap of 100 m which is impossible because if he stops the rotation then he is going to get sliced. Ino-Shika-Cho were useless against Kakuzu even though they had Kakashi with them, what makes you think they beat Gaara in the desert especially considering the range they have to cover.
Konoha 11 they are too many. The only threat could be Gaara, but Ino-Shika-Cho will beat him(i personally think Choji can even solo)
If you believe Choji can beat the Sand Siblings by himself then you aren't even worth arguing with. He'd lose to anyone of them.
Rotation should clear most of the surrounding sand. Lee could just crack EIG real quick and kill them all.
yeah it could...Lee can only go up to five gates and current Gaara would destroy Lee. Especially considering the fact Gaara in the chunin exams did not have access to this amount of sand.
All your points have been countered now it is my turn:
As the battle begins, Gaara starts a sand tidal wave to bury his opponents. Temari combines her attack with Gaara to turn the sand tidal wave into a slicing sand burial of doom. This will take out Hinata, Tenten, Ino, Sakura, Kiba, a Shino bug clone and Shikamaru.
Then Choji, Lee and Neji begin their assault while Sai uses his stealth skills and ink clones to strategically move up. During this time he uses a bird to navigate to the hill where the Sand Siblings stand. Gaara uses his sensor sand to detect his presence and attacks him. All while Kankuro and Temari hold off and kill Choji and Shino.
Fortunately for Konoha 11, Lee manages to blitz Temari and Kankuro and take them out. Now the only two that remain are Lee and Neji. After sometime, Gaara manages to beat them both.
Sand siblings win with high difficulty.