A registered boat has no name or hailing port requirements.
The state registration
ie: CAxxxxXX identifies your boat as being from the state of California
. Thats it. The state does suggest the proper location for CF numbers and that would be on the bow.
You can choose any hailing port you like and mark your boat in any manner you like.
When documenting there are specific requirements regarding hailing port including size and location of lettering.
Have fun at the naming ceremony!