I've done a few short portions of it, mainly day hikes, pretty nice area. Get the guide book from one of the national forest offices. I know the jonesboro office had it when I was there in september
Let me know if you find any place online to get more info. I want to plan a 5 day trip hitting up the most senic sections to introduce my girlfriend to multi day hiking before we go to the Smokies later in the year.