Id check out whatever/ whoever in your area with 4H kids. They might be the most likely to swap, but that would depend on their own breeding program. Just mentioning it because since you're new is the sheep family show worthy? Just because they're registered didn't mean you got "good ones."
Also being new to sheep, it might be good to just see how the 4 you have go. The little male easily becomes your first meat whether and the little female is going to take a year and half (maybe?) to be body condition for breeding.
That's another breeding of the mature ewe before her daughter is ready. And it might be easier to rent a stud for the daughter. Heck maybe your stud is good
enough to be rented out as well.
NOT trying to rain on your parade! Just being new to a "production" animal generally turns into learning experiences. I'd hate to see the update and they've died of worms 6mo later.
All that said good luck and I'm jealous! Or if you wanna swap for the bear terrorizing my backyard?