Things we do know. You'll want to optimize Charisma, uses of Bardic Music and you want max ranks of Perform dance. You probably want to be able to leverage reach as much as possible, so a lot of the same tricks that are used for spiked chain builds are worth a look.
Things we don't know. What level are you building for? As Tedronai said, what's allowed?
Things to consider. Dervish? Commonly combined with Snowflake Wardance and the whip dagger is a slashing weapon. Tripping? Getting more use out of Charisma (Iajutsu Master, Paladin of Freedom (or any of a vast number of classes that add CHA to saves) Swiftblade, Slippers of Battledancing)?