19-74 through the Nantahala Gorge is pretty hairy, in my opinion. I've ridden it from the Nantahala Outdoor Center to Wayah Road several times. It's beautiful, flows nicely (like the river), but the shoulders are non-existent for most of the route, and there is a lot of traffic...including rafting buses, semis, river gawkers and impatient car drivers of the ilk who blast big holes in the "Share the Road" signs with their bazookas! After the NOC, the road gets steeper, still narrow, and it's still busy. Past NC 28, you're on a four lane with a wide shoulder.
Bottom line, 19-74 is rideable, but hardly relaxing. Grit your teeth and ride fast! If you can tackle it early in the day, you'll have a safer and more enjoyable ride.