So who do you think would win this... I'd say the Uchiha as the only real problems are Hashirama,Naruto and Minato.
Who do you think would win?
In this senerio are all Hokage's alive and at full power like Madara? If you're bringing Itachi back then they should be alive and if that's the case then SA wins this and if not then I don't see them winning unless Kakashi can Spam Kamui. Naruto powers up the kages with Kurama's chakra making their power 4x-6x+ and if Minato adds Yin chakra then it's even more of a power boost. The Hokages aren't at full power and Edo Hashirama was fighting Madara when he used clones and Tobirama commented that even if they cancelled their clones that they wouldn't be strong enough to close the power gap from them and Juubito.
SM Hashirama would be controlling the Bijuu's with wood clones while the cloak further powers him up, Minato would have his BM and both hands, BSM Naruto, Tobirama, Hiruzen, Oonoki, Gaara, Tsunade, A, Mei, all get power boost with much stronger jutsus. Kakashi can spam Kamui.
I'm guessing you're using Blind Madara due to Obito having 1 of his eyes or does Madara have his eyes and Obito only have 1 eye? Well if it's MS Obito then Minato already have him marked, it post Juubi Obito then he's weakened and Tobirama have him marked.
Minato already showed he can best MS Obito and Kakashi can take someone to the other dimension with him so Obito can't Kamui or have to go to the next world to fight them. What do you think a Shinsuusenju power will be like with SM+the power up of Kurama's chakra? Oonoki's Jinton with A's speed or Minato/Tobirama's using FTG to teleport the fighters remotely as Tobirama was doing with Minato.