It sounds like board won’t be a shock. Wherever you are in Pleasanton (I think I know the hospital) is not too far from the outlet mall. Your best options for board are going to be Pleasanton/ San Ramon and Livermore, though Castro Valley is certainly a good option. I would look into the people mentioned already and start looking there and see how it feels.
You’ll get lots of ideas about farriers once you chose a place. (I would keep the horse barefoot unless he has feet issues! My FEI horses are barefoot.)