As a long term goal then you are looking pretty good. You can add some normal females in here and there. And bulk up your female stock or If you find a good deal on another single gene breedable girl add her in. It does depend in quality. But it's great to start from scratch! You go a little slower and that's not a bad thing. It's good to start slow and the animals benefit from it enormously. I love breeding because I enjoy it. I have 10 holdbacks from my now 4 years experience and it's wonderful to watch them grow! Then when you get multiple generations and see how the line grows and benefits, and changes with different genes that's truly amazing.