yes, get him neutered. you are putting the cart before the horse. this is not how you go into breeding
is there a reason that the person you got him from is not mentoring you? does you contract not say you cannot breed him? or that you must get him neutered
have you read & understood all of this?
Welcome to The Boykin Spaniel Society - Camden, South Carolina
they seem to have very strict guidelines, I would think his get could not be registered