Some mods that you may want to look into:

1. Schwalbe Kojaks at max PSI.
2. Lighter pedals
Both of these lighten rotating mass;
which is more beneficial than just lighter
parts(ti seat post, carbon saddle, etc.).

3. Aero/lowest position on the handle bars.
4. Stiffest suspension you can find/mod.
I'm using a green Birdy block.

Van Cortland Park, da Bronx by 1nterceptor, on Flickr