You can't get into Lamb's with that mast
height, the Roosevelt Blvd Bridge has 30-something feet clearance. Try the Marina at Ortega Landing, that is where we keep our Leopard 40
, or Ortega River Marina.
Camachee Cove at St. Augustine is a nice marina but they have a waiting list for cats, and with 70' mast height you won't be able to get under the bridge to get in there no matter what the tide is. So, you will have to look at the marinas on the San Sebastian River and plan on going through the Bridge of Lions whenever you come or go.