I unfortunately have not ridden many of the roads you are planning on riding, even though I've been back on 2 wheels and in North Carolina for the last 10 years or so, Thus, I envy you in your ride and look forward to a time when I can cover the same roads. Your plan looks great!
I'm just chiming in because it looks like you'll be in or near Asheville, NC, which I do have some familiarity with. Asheville in itself is worth a stop. Something like (don't take this to the bank) FOURTY craft breweries! And a thriving music scene. It's a hippy friendly town, if you remember or have photos of the 60s and 70s.
But really why I'm chiming in, is because once upon a time, I was on business in Asheville and needed to get back to Cape Fear. There are several ways to get from there to there, including going down I-26 to 74 and taking that all the way. Well, I made a mistake, and it was one of the best mistakes I ever made. I headed east on I-40 and almost immediately dived off on [unbeknownst to me]
ALT 74. It took me 4 times longer to get home, but dang, what a trip! I hope I can do it again before I croak. Not that it is imminent.
So if you get a chance you might want to add Alt 74 between Asheville and Lake Lure. You will not be disappointed. If you have ever been in St. John, USVI, that is the closest analogy to parts of Alt 74. You may never leave first gear in some sections, but the road is paved and good, and the scenery is maybe beyond world class. Take it easy on a FJR, and enjoy the views.