I dont like to go to 7/3 s, Its possible tho, the matchup is pretty much an up hill battle, Wladi1000 one of my offline training partners uses bo and he hates the matchup because how anoying it can be.
Ancestral is better in many ways.... but when you don't have a buffed arrow.... that is step 1. Bojutsu is trying to get things started and can convert into good damage on anything.
That said Kitana is way easier to fight with ancestral.
Ancestral is his best variation. The things he can do in ancestral stop you playing your game. He also gets 45% meter-less damage which is insane. But i think only 1 person actually plays him right and that's Happypow.
Here is match footage of Ancestral and imo how he should be played.