Well it depends if you want the TT type setup for doing the Triathlon (why would you not? comfort? apparently Cervelos are quite comfy in the TT position) or not. If you want the TT setup, try looking at the Cervelo One, Dual, or for a bit more the P2k. For a lot more $$ you can go for the P3. These are dedicated TT/Tri bikes (adjustable geometry allowing for many positions)

Or you can go for the road models that will allow fast road riding, or Tri's if you choose to go without the ABars, or with the flip of the seat post you can get a proper TT position.

http://www.cervelo.com/bikes/overview-2004.htm

follow this thread as well.
http://www.bikeforums.net/showthread.php?t=44634

Hope this helps,
Brendon