Shadowlord build help

[Cranthis]

Ok, so the build I'm using is in the spoiler below. However, I was wondering if there were any better options, should I take out two weapon fighting.
Human
1. Rogue - Craven, Dodge, Mobility, Two Weapon Fighting
2. Fighter -Hit and Run Tactics Fighter ACF - Weapon Finesse
3. Rogue - Darkstalker
4. Rogue - Penetrating Strike ACF
5. Fighter - Spring Attack
6. Assassin -Blind Fight
7. Assassin
8. Telflammar Shadowlord
9. Telflammar Shadowlord- Improved Two Weapon Fighting
10. Telflammar Shadowlord
11. Telflammar Shadowlord
12. Telflammar Shadowlord- Staggering Strike
13. Telflammar Shadowlord
14. Assassin
15. Sword Sage- Shadowblade
16. Sword Sage- Assassin stance
17. Assassin
18. Assassin - Greater Two Weapon Fighting
19. Assassin
20. Assassin

[Rethmar]

Are you taking the template qualify for the PrC?

Also, I'd keep TWF. You want a lot of attacks for a class that helps you with full attacks, so more sneak attack damage.

[Snowbluff]

Craven- Check
Staggering Strike- Check
Shadowblade- Check

The only really suggestion I would give would be learn Stand (Immediate/Swift) and Dimension Hop (Standard) as spells, and use them to get more than 1 full attack a round.

The other option would be a Telling Blow + Disciple of Dispater to make getting SA easier.

SS1/Wizard6/SS+1/TFSL (ie, my teleportron build) is a pretty messed up build, especially if you do things like spam Heroics.