Krory does have plenty of speed, but whether he could stand up to that akuma's power is questionable. Besides, it doesn't exactly present a large target for his blood attacks, and he'd probably need time for that. Since he probably won't be in peak fighting condition when he awakens, I don't think he'll have a role in this.
I think you're right about Kanda fighting this akuma too, although I really hope it doesn't happen. Maybe he'll just distract it while Lenalee gets her Innocence from Hevlaska.