I've actually come around on this.
@Shiroyru pointed out that Luffy never starts the final round against the antagonist until all the Strawhat have completed their individual battles.
I expect the final round vs Kaido to be Luffy and/or Zoro. Kidd, Killer and Law seem likely to fall beforehand, Zoro might fall as well, but I'm optimistic given his extensive build up.
Zoro's indication that he still hasn't fully acclimatised to Enma might indicate an improvement that happens between this fight and the final round.
@Bogard.