She hits 4 (I think) for decently hard damage, though it does need 20 combo to proc. Dunno how you'd get that high with water main but it could work with poison tai yes.
False, Yugito's chase is actually pure taijutsu. I'm planning to run water-sage naruto-yagura-yugito or water-sage naruto-yagura-mei once I switch to water main later so I could try poison tai w/ all those aoe taijutsu. It's a shame that Yagura's aoe chase is pure ninjutsu though. I also have a playboy team ready for Yugito (wind-playboy-yugito-mei) and it has been performing as well as my old playboy team (wind-playboy-mei-mabui).
Hanzo, DPB Hidan, Yugito. These will make you a decent 10 hit squad with Scarlet blaze. gnw Neiji can be a cheaper replacement for Hidan, though the synergy is somewhat less.