The Ojai century ride has some climbing to it, even the shorter metric century version. If this is your first time century, its not a better choice.
http://www.ojaivalleycentury.org/Rid...formation.html
If you choose to do this in June 2012, the climbing portion will be most challenging. Using a trainer exclusively is not a good idea, especially when you're already in Southern California.
Elbow: go back to the professional fitter and tell about your concerns with the elbow.