PMI for high balance loans is pretty much maxed out at 85% for CA. The super conforming or conforming limit appears to be a lock for going back up to 729k with the new stimulus bill so that may make FHA available to the OP.

Fannie/Freddie can’t make a loan over 80% LTV without MI and the MI companies don’t want much to do with CA right now.

Here is a graphical representation of what is going on as of October for Ventura. Note the 729k line should be returning as the new max:

http://effectivedemand.blogspot.com/2009/01/ventura-county-october-2008-loan-to.html

Here is a link that at the bottom has links to the MI guidelines:
http://effectivedemand.blogspot.com/2008/12/mortgage-insurers-tighten-underwriting.html