New address book?

Currently in my Address Book I am syncing two Exchange accounts, plus I have my "On My Mac" that syncs to my MobileMe. I am trying to create an address book for my wedding guest list. We have created a Google account for our wedding and I was wondering if I could setup the Google contacts as a completely separate account/address book as I'd rather not have all of the contacts sync to my phone, in addition some names such as "Dad" are not how I want to print the address labels. I was thinking about just doing groups, but it would be nice if we could both enter the data into Address Book on our computers and it all sync up with the Google account we have setup. Any way to do this?