Looking good, glad your aftercare resulted in a healthy tree. A consideration on the wire holding it in the pot...by fall, it may be a good idea to remove it by cutting it on the bottom and pulling it up through the top if you can do so without disturbing the roots much. I have run into problems girdling a small root ball like that. By fall, it won't be too late, and the roots may still grow more, making it stronger for next spring. For additional stability, you can go around the outside of the pot for another year if necessary.
