KA won't work here, Mifune was easily talked out of KA's influence. KA only works in a 1v1, a lot of people on the base seem to over hype Kotoamatsukami.
OT: Akatsuki mid diffs with 3 dead maybe.
The Itachi-Obito-Pain triangle is already pushing the fight high diff, adding Akatsuki's #4 (Kisame), Konan, Deidara , Zetsu, Kakuzu, Sasori, and Hidan.