If it's not a requirement for your school, bar classes are not necessary in order to pass the CA Bar. Your test prep company will cover all the basics.
I didn't take community property or First Amendment. My friend didn't take crim pro. We both passed on the first try.
The only bar class we all agree that you should take is evidence. The rules are complicated, and you have to learn the California distinctions on top of the FRE. I saved a lot of time studying, because I knew most of the evidence rules prior to starting test prep.