What I would do is wait until your younger pair is as least 6-8 weeks old. Give them time to grow up and put some weight on. Then I would introduce the pair and the females that you want for your breeding set into a neutral pen that neither have been in. Watch them closely to make sure the older hens will not beat up on the younger pair. I have found that they are usually pretty calm and excepting but I have seen an older hen beat up on younger birds.
Your rabbit hutch sounds good to me - 6 sq. feet for 4 birds is perfect. If you are keeping your birds outside in this please consider putting a wire "skirt" around the bottom of your pen. There have been many post on here about raccoons and other predators pulling the feet threw the bottom of cages that have quarter inch hardware mess for the floor.
Good luck with your little quailies!!!
Your rabbit hutch sounds good to me - 6 sq. feet for 4 birds is perfect. If you are keeping your birds outside in this please consider putting a wire "skirt" around the bottom of your pen. There have been many post on here about raccoons and other predators pulling the feet threw the bottom of cages that have quarter inch hardware mess for the floor.
Good luck with your little quailies!!!