I sounds like you have a great start. Im curious though who has angoras and is also an ECBC member. Theres not that many breeders working with that mute.
Just a note, the older that your female gets the harder birthing can be for her. Ive used females as old as 9 but sometimes age works against you. Her milk never came in and i had to hand raise all the kits. I always suggest males for people who are undecided. They can sit there for yrs and going into breeding at an older age doesnt affect them the same way it does for a female