You really can't ever get a purebred by crossing other breeds together, unless you wanted to try your hand at 'recreating' an existing breed using the original breeds that were used to make it, and that takes generations and generations. If you want purebreds of those breeds, you are better off going out and buying some than trying to 'make' them using other breeds and mixing them together. With careful selection you might be able to get your offspring, over the years, to resemble one of the breeds you listed perfectly, and then for all intents and purposes they would be that breed, but that really would take years and years of selecting and getting them to breed true. Breeders have a hard enough time breeding to the SOP starting with birds that aren't mixed.
This is especially true with the breeds you listed, because, you would need to breed in beards, or tufts and rumplessness depending on which breed you were going for, the proper colors, etc. It would be a lot of work.
Edited by Pyxis - 1/31/16 at 4:23pm