I have serious doubt that a false flag operation as it stands will work or whether the risk is remotely a good idea. Even if we have a konoha team acting as Sand ninja to disguise themselves, we have them running back into Wind? What if they encounter Sand ninja? We would have a major diplomatic incident on our hand.
Did we do something like this in the last world wars? How did it turn out? Moreover, couldn't other ninja village use the same tactics as we did?
Rather than assume that this is something we want, maybe we should put a kibosh on the whole thing and just give 100% of our focus on the Otter mission.