With those stats and a presumption of Wis+Dex focus for future stats, I think you might prefer a spiked chain.
It's a two-handed weapon (for Power Attack, if you put one more point in Str), it's Finesseable, and it's a Shadow Hand weapon so it's good with Shadow Blade.
You don't need TWF go be a good Swordsage. You can get 2 attacks per round with Flashing Sun (Desert Wind 2) starting at level 3 -- same attack penalty as TWF but full 2-handed damage, but only once per refresh.
I'd suggest getting more level 1 feats. Be a Human, take Flaws, be a Halfling of the Hair Feat tribe -- heck, bribe your DM with a pizza and a nice whiskey.
Feats You Want (which you can get at level 1 with 2 Flaws):
- Adaptive Style
- Shadow Blade
- Darkstalker
... then at level 3 take Weapon finesse, then take Exotic Weapon (Spiked Chain) at level 6.
If you can't use Flaws, then be a Human and delay Shadow Blade:
L1: Adaptive Style, Darkstalker
L3: Weapon Finesse
L6: Spiked Chain