Foothill--

The Ventura Trek shop is nice and they'll have a Trek 1000 WSD and probably a Lemond Etape. I've also seen them with some older model WSD bikes on special. I've not bought a bike from them, but took a friend there and he was really happy with his experience. They're a Trek concept store, so only carry Trek products.

http://trekbikesofventura.com/

There are some good shops in Santa Barbara, too.

I agree that you should try to find a shop that sells Specialized, and you might also look at the Giant OCR3w.

The Ibex suggestion is a good one. I bought a lower-end bike from them and am very impressed with it's quality. Jack, the owner, can talk you through the process. Given your hieght, you might be too small for their bikes, but the price on the Corrida CT (which is a flat bar road bike) is hard to beat. It's worth calling Jack to find out.

Good luck.