You might look into a Ti-Cycles Hyak (http://ticycles.com/TiCycles/hyak_ti.html) A non custom frame is less than $2000, a custom frame is a little over. Even though they don't list it in their specs they have a 47cm frame with 650 wheels- I have one. It's not specifically WSD, but the geometry is compatible with us smaller women (I'm short and long legged, my race bike is a Specialized Ruby).