Best of luck Juston. Big change for you and a huge scary change for Dalton. Wishing only the best for you, your friend and Dalton.
If I can give any advice...it's be patient with the little fella. He will be adjusting and adapting through all this also and it will be hard on him...at that age kids do not always know how to appropriately express their feelings.
I myself adopted two children when they were around that age. It's been great to watch them florish and grow into the young teens that they are today.
It's a huge change, a huge commitment, a huge amount of work...but extremely rewarding and I know in my case it has been simply amazing and I wouldn't want it any other way.