Looking to breed my pitbull

Hey, I'm looking to breed my pitbull with a female pitbull. He is 5 years old, and very beautiful. His coat color is grey, and nose is blue color (not exactly, but greyish blue, However, people call it blue nose, if you don't know about this pitbull, you can read about him. It will help you know about it. The female pitbull shouldn't be older than 7 years. If her coat color is also grey, then it's a plus point.