Sounds like you're really doing the homework, which is great. In my case, Roy was more of a...I knew I was his godfther and everything but I hadn't expected the accident and was pretty messed up to take him in so I made a lot of mistakes but in the end, we did pretty okay. That's another thing. No matter how hard you try, you're gonna screw up something somewhere along the line. As long as you'e honest about it and try to find something to laugh about when you do though, it can help.
And it sounds like you really get the purpose of all of this. You sound like you would be a great parent based on those things.
If you need any tips or advice or anything...I'm around.