Since you are coming to California for educational purposes, you do realize that you will be paying OOS tuition for the CA universities (including the CC)?
You cannot get instate tuition and residency based on your current plans. It is very difficult to gain instate residency in California coming from another state. You cannot accept help from family; you have to pay market rates for your rent. Yes, you have to pay rent and your relatives cannot help you. Your income has to match your expenses/expenditures with required tax records, rent receipts, utilities. The CC’s may be a little more lenient, but overall, the universities will not be so lenient.
from the website: http://ucop.edu/residency/establishing-residency.html
California is extremely expensive and you have to hope that you can find a job.
Additionally, the slate will not be wiped clean. All previous coursework grades, taken anywhere, will be averaged with new coursework.