Mine is a Cervelo R3 which I got a few weeks ago, I did put a post up about it which is a few below your post. Yeh it's pretty awesome to me coming from hardtail MTB's. Knocked 1m 31s off 1.5mile climbing segment from 8.42 (11kg MTB Hardtail) down to 7.11 (R3). And that was just on the 3rd time out on it.
Looks nice, good work OP
Not a Spesh fanboy but I had a ride on a club mates tarmac this morning, kitted out with DA and Roval 40mm carbon wheels, the only thing I can say was WOW!!!!!!
It was very stiff, very light but also very comfortable, think I would consider one now.
Sweet build, Really nice, congrats.
One day I'm going to own a pair of lightweights. Just not any day soon...
Just out of interest what made you choose an sl4 over a 15/16 Tarmac? I'm assuming it wasn't a cost issue
No plans for an SL5?! (I have a 4 and a 5, on Meilensteins!)