I'd go with option #1, a newborn. Because I really like kids and I'd love to see them grow and be with them from "the beginning." Plus, if you adoptated a child in middle school, I think it'd be harder on them to adjust to new parents, whereas a new born, they don't know that you're not their biological parents until you tell them. And for those wondering, yes, if I ever adopted a newborn baby I would tell them they were adopted and that I was not their biological father.