You guys seem to be forgetting that only taijutsu is allowed according to OP.
In which case, NO, it's impossible for Bee to solo this, even with his proficiency with swords. This 7 is the most powerful generation of sword users from the Mist, even if each of them is weaker than Bee, there's no way Bee could take down (without using ninjutsu) 6 of them. Get real.
OT: Omoi doesn't seem to be strong enough to handle one of the swordsmen. Darui seems to be capable of doing that but not much more. Bee would take down 2 or 3, but no more. I think team sworsmen would take this one mid-high difficulty. If ninjutsu was allowed, then it would be a different story, but as it is I don't see team kumo winning this.