there is rarely anything clear, to the point of removing possible problems and challenges in the future, when it comes to adoptions. A little mistake can allow a challenge later. Get the assistance of a lawyer to be sure all the i's are dotted and t's are crossed.

Once the child is adopted, as the legal parents, you would have the right to change the name of the child to match yours. In fact, if you didn't do so I think you would get some odd looks from the judge.