Carver's Gap to 19E is a much better hike. Better views, better payoff for the climbs. The open balds are fantastic. Take your time and soak in the views, no need to hurry. This is one of the top hiking destinations in the Southeast.
There are numerous places to camp. I like tenting near the Overmountain Shelter (a.k.a "The Barn.") Great views as dusk falls, plus there is a fairly reliable spring.
The trail south of TN 91 is fine, it's a lower-elevation ridgeline walk, but there will be no views when the leave are on the trees.