OOS to In-State in California

I would not count on it. Universities frown on establishing residency for educational purposes. Especially if you already attend the school and then seek reclassification.

If you really wanted to live and go to school in CA you might have to take a gap year and apply to UCs once your famiky is there long enough and deemed a resident.

But please check into the laws and regulations yourself.

But is it worth it? Can you guarantee that your parents will get jobs, will be able to sell their house in Texas? The cost of living is very high in CA.

Instate COA for UC is still $35k or so I believe. You could go instate to Texas or other OOS publics that give merit for that cost or even less.