we have No FSSP church in Orange or Los Angels counties.
I myself is convert, when I took RCIA in 1992, their teaching was not this bad as today in southern California. and RCIA class was taught by priest at that time, not liberal Lay person.
Catholic church changes a lot in last 30 years.
30 years ago, there were people who did not follow teaching of the church, but they all know they are not following it.
today, not only they don't even know teaching of church, but, they know wrong teaching of church. therefore, they do not follow it. Their teaching is more like "Unitarian Universalism" , which pretty much teach, God is love, Loving God never send anyone to hell, therefore everybody go to Heaven.
I went through this too, and what I would do is seek a Traditional Priest (FSSP, SSPX, etc) so that you can just meet with them once a week or so. He should catechize you one on one and after a period of time will bring you into the church. My RCIA class Priest and cetechist were good, but then again they are the most traditional Novus Ordo that I have ever seen.
There are some RCIA programs that are good, bu most are probably bad. I would go to the FSSP and SSPX websites and look for places to attend Mass.
Pray to Our Lady to help guide you into the Church Her way! If you have the means to travel an hour away if you have to, it will be worth it. You might even find that the Traditional Latin Mass is said very close to you!
I'll pray for you and hope that you are led to a Traditional Priest who will help you and your family. God bless you.