My theory is
Kakashi will be fighting the 7 swordsmen.
But the retreating force of Kankuro will be running towards his way.
Now here is my first line up of fights.
1. Kakashi will be fighting going all out he might take two down.
But Kabuto summons Rin. (Not Obito)
Obitio died when he was a kid. So that would be pointless to bring a kid back. But Rin she might have died when she was an adult. Rin might get into Kakashi feelings.
Thas my one of my first fights
Now with Kankuro team meeting up with Kakashi group getting chased by Kim,Chiyo and that fat guy.
I bet Suigetsu and Jugo and Karin is going to show up. Trying to steal swords.
Now with that being said
2. Fight Suigetsu vs his brother Mangetsu.
I say this because as you known Madara doesn't care about Sasuke group Taka one bit. As we all know Madara told Sasuke to kill Karin. Aslo Sasuke left them.
So they are on their own team.
I have a feeling Suigetsu brother Mangetsu is like they say demon itself. As we known Suigetsu went missing because Oro took him. But to become the master of all 7 Mangetsu probable beat all the rest just to train with their swords. I say this because Suigetsu was going to fight Kisame even if they were the new generation. He wanted to still beat him and I bet he would have try and he knew about the Mizkage body guard without us it showing us him meeting him.
Mangetsu would have thought Suigetsu already dead so he would not hold back but that being Suigetsu older brother. He would convice him about their family bond. I say setting Mangetsu soul free.
3.The third fight would be Jugo vs Kimmaro. Kimmaro would fight Jugo because he want to push Oro law not matter what. But Jugo would be content not to fight Kimmaro because it was his only friend. Later they will fight and Jugo would tell Kimmaro about him being hurt and how it is more to life than Oro. He might say something like friendship! Kimmaro gain friendship through Oro for Jugo. But at the same time they were friends. This might set his soul free.
4. The 4th fight would be Chiyo. But who knows Chiyo better than Ebizō.
They are called the Honoured Siblings. Who would know her moves man than him. Sasori is gone. Sakura wouldn't be able to beat her. He is a higher up so prob someone will tell him Chiyo is there. We seen Ebizo go to Chiyo when she went to get the puppets to fight Sasori so he knows her and her ablities.
5. Guy will handle either the rest of the 7 swords men because like we all know he isn't going to sit steal and let Kakashi have all the fun. Him and Lee.
Now on the other end of the fighting field
6. Its going to be Dan vs Tsuande. I doubt Choji dad is even paying attention to him he was trying to talk to his son to much. Dan told him to make the barriers....
Thats my line up now you guys choose yours.