I live in Cali and let me say that ALL ARE WELCOME. It is a big state and there is plenty of room. My Wife and I did it 2 years ago and it was the best move we ever made.
That being said, let me give you a few of our experiences.
Housing - There are great deals to be had all over Cali. The housing bubble burst here harder than anywhere else (maybe Florida?). So there are deals to be had. If you are renting (especially larger houses in the country - we pay $950 pm for a 2000 sf house with 20 acres), you WILL have a difficult time getting a place if you don't have a job. Most landlords are afraid to rent to you if they know you grow weed because frankly, a lot of growers trash the house. They cut holes in shit and mold gets everywhere. They fuck up the electricity and it is generally not a good deal for the landlord. "I grow pot" is NOT an acceptable "source of income". They want you to be able to prove your income. 95% of landlords will not rent to you without a job/steady source of income.
You will need at least a years (you could prolly get by with 6 months) worth of steady income to see you through. I dunno, maybe it took me longer to get it, but I didn't put out the quality until after a few grows. Unless you already got shit dialed in, don't expect to get a big haul 8 weeks after you move. I had quite a bit experience already, but the only to make $$ is to grow BOMB.
If you are not moving any grow equipment out here, don't worry. Craigslist is FULL of people selling their equipment. A lot of people come out here without shit and go down in flames and end up homeless. If you can truly afford to move out here (meaning you have a verifiable source of income for the LL and can pay your way through more than the first 3 months if your crop gets ripped, spider-mited, Timer failured, powdery mildewed, earthquaked, flooded, burnt - you get the idea, a lot of shit can go wrong)
If you can do that come on out. Otherwise, I would wait until I could do all of that before I would risk it.
2 cents from someone who is there