The problem with an auction of that many be bottles is that you may have create a non profit corp to be the beneficiary. A private party transaction within the state for the entire lot is probably your best bet. As sales tax has already been paid, this would keep the Board of Equalization out of the mix.
I would contact your local office of the CA ABC for more precise answers.
http://www.abc.ca.gov/districts.asp?City=STA#Santaana