Its all up to you, we'll still know who you are and since its your name, make it something you like, personally, I think it should stay but if you want to change it, by all means go ahead but make sure its something you like
My opinion would be to not change it. It becomes less distinctive, even though you're adding more to it. Then you'll just be grouped with other Captains, who are potentially inferior to you! No offensive to other captains out there.