Wytsend, that is exactly why I want to keep my little pygmy intact. I can get him used to being on his own in his own quarters, and train him as I want him. The British Alpine intact billy I sold last year was a pleasure to own, and probably the nicest billy I have kept. I very much regret parting with him now, but at the time had no large females any more so he was wasted.
Langdon, I can see your point about having no suitable intact billy goats nearby. I am in the same position. I don't think we are trying to put you off having your own billy, but from someone who has kept them for a long time, both pygmy and large breeds, its important to get across to you what they can be like. They are very strong, can be very destructive, and if they take a dislike to you, dangerous too!!
How has the mature billy been kept? On his own, or with females or a castrated male maybe? Is he housed all the time, or allowed out in a field? How will you be keeping him? Have you any near neighbours - who may object to the smell, for one thing!!!
This is not "stop Langdon having a billy goat" far from it, just want to make sure you fully understand what a billy can be like.