You'll want to focus on one of the 3 mental stats, to avoid MAD. I'll point out a few advantages below.
Also with TWF, you're a bit feat starved(get Gloves of the Balanced Hand ASAP, possibly combine with other enchantments later on.)
Warblade/ Factotum has great synergy, if you pump up your INT. Better than Rogue, if you're not keen on sneak attack.
A Duskblades channeling doesn't mesh too well with TWF, they're better suited for THF, but if you want to enter Jade Phoenix Mage(whose capstone is "cheat death and damage your enemies, before you go down") it is one of the best base classes to use.
Warblades can count as Fighters for the purpose of Weapon Spec., Melee weapon mastery is actually a good investment for TWF.
If you use one of the other Martial Adepts, Pious Templar can also grant Weapon Spec without needing to take 4 levels of Fighter(Swordsage can even get the required Weapon Focus for free).
With 16+ in CHA, you should consider Bard + Snowflake Wardance.
Add Frightful Presence(or other Fear-inducing tactics), Bladeweave(Bard Spell, SpC) & Sudden Stunning(Weapon Enhancement, MIC) and few enemies will actually be in a condition to hurt you.
Make the last of these Warblade levels Crusader 1 instead and nab Devoted Spirit for in combat healing.
If you want to focus on WIS instead of CHA, you could use Swordsage to gain Sneak Attack, shortrange teleport and other nice tricks.
Ranger(if you can use Dragon Mag: Mystic Ranger; if you can use SRD Prestige Ranger with your choice of Cleric, Druid or other Divine Baseclass) does get access to WIS-based magic, to go with your Swordsage. Alternately, a few levels of Psychic Warrior provide Bonus Feats and some useful Powers(War Mind might work, YMMV)
Regardless, you should aim for the Bloodclaw Master PrC, if you stick with Twin Daggers(or other Tiger Claw weapons).