Considering Yamato could come to help them once Scabbards reach Momo. It's possible Zoro and Luffy vs Kaido and Killer/Kidd against BM with law's supporting each group.
But Law doesn't have that much of endurance and also if he still supports both teams then it changes nothing from right now because Kaido and Big Mom will be close to each other. They want to isolate/remove one because two yonkou together are hard to face, probably because they protect each other very well, are synchro, have excellent synergy, etc.
So my guess would be Zoro and Luffy vs Kaido with Yamato helping them at the end. Law/Killer/Kidd vs Big Mom, but this one could be off paneled. As I said, Oda protects a little bit too much Big Mom and seeing side characters defeating a Yonkou has really low probabilities. Oda didn't even want Kidd to defeat some YC and Law doflamingo so it's hard to see them defeating a Big Mom who has also lots of connection with Elbaf.