One of the best & fastest masters teams in the country is just down the road from you at Irvine -- http://www.novamasters.com/. Great coaches and, whenever I've dropped in to visit them, I've always found a great combination of coaches plus swimmers to push me. I have no idea of your speed, but I imagine you can find the right mix here, assuming they are not too far from you.
I've been in that area on business and it seems like that region has a strange lack of viable Masters programs. My only suggestion is to hit the Sippy facility in Riverside. Plenty of workout times.
