Re: How Long Would it Take…
Muzna I see that I was unable to explain my mind. I am not a wise person and I am not good with words. And that is a lethal combination 
I love kids. I go mad and lose my sleep if I ever come to know of some kid somehwere in distress. I would go and adopt a kid just for the love of it - to provide that kid a good quality life, and not because God did not give me one. Just like anything else in life, 2 kids are not equal, and my biological kid is different than my adopted kid. One cannot replace the other for me.
I know of (and you too) at least 2 examples where in one example, a couple adopted kids because they did not have their own. And in the other example, after adoption, couple was blessed with a biological kid. In both cases, I am sure that the adoption was neither the replacement, nor better or worst than having own kids. In both examples, what I see is that God blessed them with opportunity to raise kids that were not born through them, but they were loved and raised the same.
DO you think that those kids see them any different than the the way my kids see me? No, right?
Point is, adoption vs Biological is all in our head sometimes. If God had given me means (and I pray that he does, soon), I would love to have another kid calling me dad.
My only biased might be that even the 3rd time around, I would prefer a girl