Very cool Nick, I don't know that I have the guts to do it solo so props to you. I think I'd at least need a camera crew...(Bear Grylls)...haha.
About bringing the heat, I wouldn't be concerned about not having your CCW...most states on the upper part of the trail probably don't recognize NC carry anyways. The best way to carry is to seem to be not carrying at all....just remember that. If you do, nobody including Rangers will know. I'd rather be caught with it, no permit, than caught without it. I'll beg for forgiveness after I keep myself alive. Go with something such as the
Ruger LCP or
Taurus TCP. Both very small .380s. I have the Ruger that I carry, um, that I may or may not carry daily

.
So you're starting at Springer on the 27th huh? I may join you for a day hike if you don't mind. When are you leaving to come down this way?