Wouldn’t that throw our plans even more off course?
Not really unless team Suna stops too, which considering they've been in limbo since Island Alpha doesn't mean much. The only ones who'd react are Koki'o and Amari, essentially where-ever those two poof will be Suna's location when they stop being incognito.
Don't worry he won't.
In any event it shouldn't matter which one so long as they manage to get one. Getting two Jinchuriki in a hypothetical scenario would be fantastic. Though if there is any bias maybe 3 Tails given it could be a good chip to use with talks with Kiri given its history with their village.
Negotiate with Kiri?
It's not that I'm doubting your ability to, but I'm definitely doubting your ability to :T
Well, there could definitely be some...bias in play. Since the Mist is fairly close to our current location —close enough that Damos' clouds can be seen from here— then we're probably only a few tens of kilometers off from the Mist.
That's within the range of Hina's Byakugan, and even if it wasn't that Biju being dragged underwater isn't something she'll miss.
To gun after the three tails knowing we can flex it against the Mist's current situation is certainly on option.
Okay, taking a step back, what would Kiri even use to negotiate for a Biju? Money? Food?
Oh, and in hindsight Retro controls Tsunade so that'd be him negotiating I guess.