Hi tikiranch,
Welcome to the forums!
I'm also in the OC (live in Silverado Canyon, work in NB).
I'm sorry I don't know of any installers specifically, but have you looked in our Installer Directory (
http://www.ikeafans.com/forums/installer-directory/)?
Have you called the Costa Mesa store (
http://www.ikeafans.com/forums/ikea-store-directory/4537-ikea-costa-mesa-ca-usa.html) for suggestions?
I know that others on this forum have used handymen/contractors successfully, so that might be an option as a last resort.