I should jump in, as you really think Madara stands a chances here. So lets spice things up:
I see underrating in Kabuto's reserves here. He already has feats to take in and enter SM, which was stated that you need enormous amount of chakra reserves to do. Kabuto's is very near or even a bit higher then Naruto, war arc. Who fought in a battle for more then a day. Even the SA fought for more then a day. Regardless outlasting argument is not happening.
Katon is nearly useless in this fight. Whoever is defending Madara thinks its absolutely necessary to even use Oral Rebith. Wrong, we have canonically witness that simply hiding underground is a perfect move to do counter Katon[
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]. Something Kabuto has in his possession. In fact the wide AoE will have Madara lose line of sight to see where Kabuto went, which he takes advantage and take out his legs[
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>
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]. Then later either kills or gains an Uchiha body.
Not sure how serious people are, stating Katon is beating Manda 2. We literally saw Manda 1 counter Katon+Oil of the size of Juubi and somehow a superior version is going down? No, Manda 2 counters it the same ways and crushes/swipes around Madara in its path, or at least his clones. Genjutsu is not possible with a simple command to relies on its tongue instead of its eyes to track his enemy. Manda use brille, problem solved. .And time limits on summons depend on the summoning. Kabuto created Manda 2 so evidence is needed for your claim that he is limited.
Close quarters does not have to be Kabuto's forte to win this. Not when he was normal sensing and Sound 5+Oro to support him. Yes Kabuto does have sensing. Anyone disagreeing is outright denying manga. We already witness it when Kabuto had his snake track Naruto[
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]. And we also have a legitimate statement of Kabuto stating that he has sensory, past tense[
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]. Facing Kabuto in CQC is extremely dangerous as he can simply merge with you, the moment he uses Sakon's ability via Kisei Kikai no Jutsu. Kabuto slips in "torso Sakon" and have him assassinate him then and there. Not only is that dangerous, but simply attempting to beat up Kabuto with Orochimaru's white snake poison has him paralyze for damaging him.
So far you stated that you aren't sure how Sound 5 (and Oro) is being useful here and I already address using Sakon and Oro, ending this battle.
Kidomaru: No method to break his webs, in Madara's arsenal, when it took a higher version of Fire to beat this. Kidomaru's gold defense also blocks
all chakra so there goes any attempt that can roast him like Katon Lol.
Jirobo: His hercule strength can dis balance[
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] (
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) Madara into trapping him in Doton: Doro. Madara has no method of breaking this wall free, as it will not only absorb his chakra but use it itself to rebuilt and repair any damage as fast he his attempts.
Tayuya: I fail to see how Bushins is working here when we have witness that Tayuya Genjutsu was able to shut down limited use of chakra. If something happens to the orignal then it will disrupt Madara's chakra flow and they go poof. Much like how Susanoo no longer was capable for being used under the genjutsu. Yin Base techs were shown to be useable here. Regardless its very hard to judge the ability without SM, but its clear the Clones can be effected as we have seen Naruto and Kakashi being hit by genjutsu.
Your wind counter is only possible after absorbing a technique with Gunbai.
All and all this is massive rape here.