I'm surprised that absolutely no one in the thread thus far said Kakashi. I guess I'll go for Kakashi then(heh, Bogard posted before I refreshed, not bad sir not bad)
They're going to have a serious hard fight vs Raikiri Wolf, Raiden, genjutsu, superior speed and taijutsu, the optional Kamui if it's required, Doton, etc.
And when the group finally defeats Kakashi in this scenario, it bursts into lightning and electrocutes and paralyzes everything in the area only to realize that it was a Raiton Bunshin the entire time, while Kakashi can pick them off from that point with ease.
I can see their teamwork goi together to beat Kakashi in the end but the chances of that are very slim, especially considering Kakashi uses bunshin feints and decent strategies in every battle. He's already hard enough to fight but when they finally beat him, poof and they're electrocuted.
Genjutsu doesn'tw ork on clones either, Kakashi shouldn't even be within the vicinity of tayuya's genjutsu if he uses bunshin feints, if he is they won't be able to find his real self and clone could break him out or vice versa. When Tayuya is busy playing her flute and her or one of the other sound jumps in to kill him, he can easily sneak up on them and kill them from that point or the Raiton Bunshin they just killed will zap them and you know how it goes from there.
Raiden was slicing through V2 bijuu chakra, I don't really see Kimimaro or Kidomaru to be a problem, Jirobo is also taken out etc. My main reasoning is that 2 tokubetsu jonin forced the Sound 4 to use CS2 and almost die themselves, the Tokubetsu Jonin weren't even killed in the process. 4 Genin managed to beat the Sound 4, and Kimimaro isn't too decent of a matchup for Kakashi.