Actually he can qualify at level 10. Unarmed Swordsage gets Improved Unarmed Strike as a bonus feat. Which means he can get the feats out of the way at level 9.
Yeah, I was taking that into account. My mis-count was from not noticing that he was allowed a flaw. Still, spending every single normal feat until level 10, when you're starting at level 1, for the sake of qualifying for a prestige class (even one as nice as Mo9) is a pretty big sacrifice.

And I think the biggest argument for going Wis primary instead of Dex is that, between Mo9 prereqs and the VoP bonus feats, it's going to be a heck of a lot easier to pick up Intuitive Attack than Weapon Finesse.