Oda is bad with fights as it is, but now he has 7 different characters that he has to juggle, with two of them being Luffy and Zoro that he can't get on their dick fast enough. He will have to split Kaido and Big mom, but then it's two different major fights to focus on, not counting the other fights, and my faith in him to mange that properly is exceptionally low.
One way this fight goes down even remotely conceivable is Big Mom Leaving the fight entirely, either by the magic of amnesia or whatever else, that way 5 V 1 is something Oda can still mange.
However, no proper sense of danger, lack of tension, PIS, Luffy is Jesus and Zoro is badass syndromes will still weigh on this fight.