Just be careful not to stay working in a place like a nursing home to long. You get labled as a "long term care" nurse. It's very difficult to get into the hospital later.
My advice is to keep trying for med/surg. I see many jobs in California. You may have to travel or move for awhile but it would be worth it.
If you are not even getting interviews you may want to have someone look over your resume, help you with cover letters. It seems you should be getting some interviews. Your resume just may not be standing out enough to catch someones interest. There are state employment agencies that can help you with that.
When you do interview, I wouldn't tell them you were planning to move on from there, They invest a lot of time and money to train you, and won't hire you if they think you will leave as soon as you get the needed experience. And who knows! You may like hospital nursing!
You would be wise to take any hospital job offered. I know from experience, they hire for other units first from the inside. Also many facilities will cross-train you to other depts. You can also float to other units when they are short staffed.
But first you need to figure out why you are not getting interviews!
best of luck!