It depends. If Sasuke really unlocked PS the moment we first saw it, Edo Madara would probably kill them all in the end with Perfect Susanoo. If he had all the Susanoo variants he showed before, but was just climbing up the ladder as he went on, then they could possibly win this, but even then it'd depend on how strong Sasuke's Susanoo is in comparison to Madara's since we have zero feats for Sasuke's Susanoo standalone.
-With PS, he might be able to hold off Madara's PS (don't even know since the lack of feats) long enough for a super Jinton to breach PS's defenses and incapacitate Madara. He'll rape the clones on his own so Onoki won't have to waste his Super Jinton, and some of his chakra fighting the clones. Itachi can hold off the clones as well, but I don't see how he's of much use here.
-If he has to unlock it during the fight, then Onoki might end up using all his chakra on the clones, leading to Madara eventually beating Sasuke down, then he picks off the weakened Gokage. If he get it before Onoki uses the Super Jinton, it probably goes the same way.