Holding V4 and creating Kirin won't be easy for Sasuke especially holding up the former which he hasn't shown to hold up for long. Adding Amaterasu to this won't help him at all. Even after being healed completely(Middle panel:
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) , he immediately dropped his Susano'o(V2) level after using Amaterasu just once as even Obito was stating in the bottom here
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and at this point, he had only used V2 against Danzo during the first exchange of the fight.
V4 seemed to be heavy for Sasuke while incorporating another powerful technique like Amaterasu and then Kirin so there's not much reason to believe that Sasuke wouldn't drop levels after couple shots of Amaterasu and whether he pulls it back up, Gai would have attacked with AT given the intel and speed he showed to be able to attack against Madara.
AT destroyed EMS Madara's V3 and went ahead to take down Madara. Danzo's wind style created a gap in Sasuke's V3, at least 2 should do a considerable damage to his V4 which I definitely see dropping down at some point while trying to create Kirin.
Highly doubt that Sasuke we'll be seeing Kirin+V4 sometime in this match. Not to mention while having the make the connection with lightning, Sasuke would create at least a little gap in Susano'o?