The sex-link traits will never breed true, because of how the genetics of sex linkage works.
If you wanted chickens that look like Red Star hens and breed true, that could be done. It's basically a Rhode Island Red with all the black changed to white. Crossing a Red Star hen to a Rhode Island...
There's no magic number. And developing a new breed will typically take longer than working with an established breed.
From looking at your chart: you should plan to hatch a LOT of chicks every year after the first, because you will be getting chicks with a wide mix of traits, and you will want...
Cochins and Brahmas both come in bantam size and large size. Both bantams are small, both standards are supposed to be large. I'm not sure why the chart calls for standard Brahmas rather than bantam ones.
And they have different comb types: single comb for Cochins, pea comb for Brahmas. The pea...