I live in southern CA, but I have family near that area.
I'm not too sure how your certificate would transfer to CA. You may want to look into that first. CA has a multiple subject credential (K-8 - middle school classes must be core classes, ie Social Studies/Language Arts block), and secondary (6-12) credentials. I'm not sure what jobs you'd be qualified for with a 4-8 credential, since there is no such thing in CA. It will be easier for you with the ESL certificate I would imagine, since every CA teacher must have ESL authorization (CLAD) build into the credential. Start with the CA department of education website and go from there.
As for the Sacramento area, all of the major Sac county districts have had a LOT of layoffs the past few years, and jobs are hard to come by up there. I have seen elementary jobs posted in the outlying, more rural areas surrounding Sacramento County, especially El Dorado County to the east - but even there, the jobs are few and far between. I've also seen jobs in West Sacramento, but those have all been internal only. I don't think Folsom-Cordova (that's the district you'd be in) has really been hiring at all, unfortunately. So to answer your question, I think it would be very hard to get a job in that immediate area, but you might
have more luck if you're willing to commute 40 minutes or so.
I'm sorry to be a downer. The thing with CA is that there is a lot of uncertainty about budgets, jobs, and where things are going. For example, Elk Grove, which is just to the south of Sacramento, laid off a few hundred teachers, but then hired them all back just a few days before school started. You may want to look at the Sacramento Bee's website, in the education section, to get a better idea.
There are charter and private schools in the Sacramento area, also, if that is an option for you.
Your odds would be better if you can teach middle school science, but you'd have to check on the reciprocity of your certification with California.
I wish you the best of luck - it really is a great area and a fantastic place to raise a family. I love it up there. And you never know what could open up! CA's teacher job market is very unpredictable, which could be a good thing for you, who knows!