Seeing as I left California for school out of state, there's no way I would advise you to come here and deal with school.
That said, a possible option you could get into would be taking 1 or 2 classes at a JC in CA (you can take up to 6 units or so without encroaching on gaining your residency, I believe) while going to school - if that is you REALLY think moving here would be a good option for you.
Honestly, there's no real rush in school. I didn't graduate on time, and neither does the average college student today... only about 25% or so of college students graduate with a bachelors in 4 years or less after high school, so no pressure or shame in getting that piece of paper quickly... Take your time and find out what to do.
As for California's education system... the UC and CSU systems aren't bad, and are similarly priced to other states, but the cost of living in CA is pretty brutal if you don't have a free place to live for free (assuming you're going to want to move out of grandma's house sometime within that span...).
I moved up to Oregon, and swallowed the 50% extra cost of tuition or so over an in-state oregonian, in order to take advantage of the 66% lower cost of living, and lack of sales tax - all while having a high minimum wage and an adequate amount of job availability.
During school, I paid somewhere around 350-400 a month for really nice housing in nice areas close enough to walk to campus. In California, where I went to JC for two years, I had to take on 2 jobs just to help afford the rent which was at least twice as high, in a place that had crackhead neighbors, and had to still commute through traffic for 25 minutes and then deal with trying to find parking...
Granted I was living in an urban area, and those things are usually true for almost any area with a large population, but still. Brutal.
On top of that, getting classes in California schools is fucking ridiculous. If the class doesn't fill up before you get a chance to get in, the system's bureaucracy will probably find a reason why you can't sign up for it when you need to... making it so you have to waitlist and probably not get into the course. I realize this is the case almost everywhere now, but in California, where the population is 10% of the rest of the country, there's that many more students in your position that you have to compete with.
So... I'd weigh out the costs and stuff here on your own a bit before jumping straight into it.
Have a nice day, Bluename.