Welcome to our little club. There are people here from GA, and people who have had surgery at Emory, including with Dr. Mattox there, I think. They may come along shortly and fill you in.
A diagnosis of AN certainly can be a lot to take in all at once. Fortunately in most cases you do not have to rush, and can take a little time to sort things out. You can get more information on the surgery, other surgery centers, and the surgeons at Emory. How large is large? You may or may not be able to look at radiation as an option as well.
Don't panic. Having an AN is not especially fun, but you will make it through the process just fine. There are lots of people on this forum who will share their experiences with you and give you support any time you need it. You may need to make a few changes in your life style, but you will still be able to enjoy most things in life.