I can understand not wanting to leave SF, but I'd say choose Davis. If you look on the NALP directory ( www.nalpdirectory.com
I think), it shows that 140 or so firms do OCI at Davis, and many of these are firms in San Francisco/Bay Area, so I don't think you'd have to be worried about being stuck in Sacramento. I went to Davis undergrad - it's really not a horrible place to spend three years.
As for the deposit...I know there are several people on this board who are sending in more than one seat deposit. Usually there are two deposits, one in the spring, and one in the summer - just don't send the second deposit to whatever school you will not attend.
And hopefully Hastings will come through for you. Good luck!