If you are planing to do a thru-hike, definately do the approach trail. Amicalola Falls Park is such a nice spot to start. The approach trail starts with a beautiful stone arch to have your picture taken under.
2000 miles is a long way to walk. Do a few extra at the begining, you will be glad you did. Do the 9 miles to Springer shelter and spend the night. I did and was never sorry that I didn't take the "short cut".