I was in the same boat as you will be. I have my B.S. in Public and Community Health, and went for the ADN. For me, employers didn't give a crap if you had previous degrees--only if they were nursing-related. I am sure your EMT will help out for sure. I didn't have any problem finding a job (I actually turned my first job offer down), but I did move from Maryland to Texas after graduation to be with my husband (military). It really depends where you live. My friends in Maryland who graduated in July with me, about half of them have jobs while the other half is still looking.
The only thing I will say is that everyone told me that I would not have a life, and that I'd be studying my life away, but I didn't find that to be true. I did an accelerated program and got my ADN in 13 months (it even had breaks in between). It was much more difficult that my four-year degree combined but if you really are into the material, it isn't bad at all. Especially towards the end of the program, you'll have so many, "Ahhh, that explains a lot" moments. I really enjoyed the program and I wish you the best of luck!
I was amazed at how much nurses had to know! And no one will understand how much you do during a shift if he/she is not a nurse already...that is my two cents
Good luck in California...I hear it is rough finding jobs there. If you can get a part-time job in a hospital as a Patient Care Technician or something similar, that will help you get an "in" into the hospital, make you a better nurse, and make nursing school better since you'll probably see more hands-on and different situations as a tech than as a student.