if your budget is low, pick up a couple normal breedable females (or even some girls that'll be ready to go next year), 1-2 baby-juvy visual males and a couple baby girls to raise up. If budget is higher, pick up some sub-adult visual females or even full grown breeder girls (if you can find any that meet your requirements) and some juvy or sub-adult visual males and let the scales fly.

If goal is some major 3+ gene babies, it'd be better in the short run to go with the visual females up front, as it'll cut your time down. If time isn't that much of a factor and you'd be happy with 2 gene animals, get the normal girls, keep back some visual girls and raise em up. Or just buy some visual baby girls and wait for them to get older before getting a male.