After many hours research and lots of help from fellow Mumsnetters on my previous thread now cant quite believe that we are all booked up (through Trailfinders) so thanks again!
Final Itinerary worked out - we fly out from Glasgow next August 31st and spend 2 nights in New York, and then fly onto California.
4 nights San Francisco, then pick up a car - 1 night Monterey - 1 night in Santa Barbara (at a lovely hotel right across from the beach) - 4 nights Los Angeles - and last but not least 4 nights in an ocean front room in a hotel on Laguna Beach!
Now we can start planning all we want to do!