Where's Canyon Country? There's BeingMe in Orange County, Transgender Perceptions in LA, LA Gender Center in LA, that group that Casey Weitzman runs that I don't remember the name of in LA, I heard LA Gay & Lesbian Center is starting up their MTF trans group again soon, and a few more. So that's LA and Orange County, I'm not sure of others

Good luck! I started my transition at the Orange County one and have been to the Transgender Perceptions one maybe 5-6 times over 5 years.