I recently attended a graduate development conference at a major university and spoke with many of the faculty. From what I was told, the MFT (or frankly any counseling profession, for that matter) market is absolutely FLOODED with workers in California. I'm not saying you can't make it, I'm just handing you their two cents - do with it what you may.
As for the MS vs MA... Do you plan to eventually earn a Ph.D. or do research? If so, the MA option is considered the "academic" route whereas the MS is generally more career-specific. The MA may (or may not) require a thesis while the MS might be more inclined to offer hands-on experience in lieu of a thesis. If you choose to earn a Ph.D., you may be more likely to be accepted with the MA but if you don't care, the MS might help you avoid the thesis, based on your program of choice.
This is all I know. I asked a question here a few days back - it's had nearly 300 views and no replies. I saw that you hadn't had any replies and didn't want you to go without input the way I have, so I'm telling you what I know. Maybe someone else can offer some more insight?
Good luck!