I am a Barber and I will be honest with you. That forhead might be natural for you but the long curls with that high forhead make it look like your hairline is in fact receding. so whether or not you decide to shave your head younreally should do something call attention to that high for head. you could try some sort of a style which reduces the height of your hair; either by combing it down and then over to one side, or you coul try cutting it into a short buzzcut with tightly skin-faded side.
If neither of these styles, or the maintenance they will require, sound good to you I think you should go ahead and try the clean shave. i'm quite sure look very good on you because of the shape of your face and with your goatee. just remember if you do try thoe shave you must do the 30 day rule to give it a fair trial. if you don't like it after the thirty days it willgrow back into a nice buzzcut in about a week.
but do what YOU want to do, not what other people tell you to do . Do what makes YOU feel good!