>>76557732
In an ideal world, she would have her first child at age 15 or earlier (both married to each other), and we'd have another kid every 3 years or so.
That's how they did it and still do it in traditional societies, and what most of your grand-grandparents did.
Realistically, in today's clown world society in which healthy reproductive habits are taboo (but only for Whites), try to find a woman that's 23-24 at the latest for your first child.
Ideally, look for one that hasn't gone to college and hasn't been sleeping around. A virgin is the golden standard, but that might be hard to find.
Age gaps don't matter. You can get together with a girl 5, 10, 15 or even 20 years younger than you.
Provided you have your life in order, and you're not a pussy that caves at the slightest social pressure.