I am wanting to raise meaties this spring but don't want to buy commercial cornish x rock crosses. I was hoping to get a layer/meat bird that still gets fair sized by say 12-16 weeks instead of 8 and bypass any physical ailments and sudden deaths and have the option to keep some back as breeding stock. What are the best crosses for this? My FIL tried keeping a cornishX pullet back but never got an egg from her and heard they are sterile, but I think they just need AI right? Any info related to breeding meats or layer/meats is greatly appreciated!