Ok, gonna leave the 10th up to you. It is 7 hours by slab to there from CBus.
11th Tonik's famous route. If you go clockwise you will be too early to eat at Cafe Rel. If you go counter clockwise you have to go across the Skyway in the morning and it may be damp/wet/foggy. https://goo.gl/maps/BPzHpxaD6anWqKvV6
12th Do this one clockwise so you get past Gatlinburg before the tourist clog the roads. In Maggie Valley is the Wheels Thru Time Museum and Carvers Maggie Valley Rest. for Brown Trout. This is also a second shot at an early dinner at Cafe Rel. https://goo.gl/maps/92QKZpFcTC8aR12aA
13th I would round trip the Devils Triangle area, gonna be hard to hit that on the way to Marion since it is totally in the wrong direction. Unless from Rocky top you slab it. And you will miss the really fun way to get there that I am going to suggest for the 14th. This is one way to Rocky Top and Coal SmokeHouse and the two sides of the triangle you want. Return you can slab through Knoxville (not far or bad) or you can come back the same way but cut off the two sides of the triangle and use 330 to short cut it. https://goo.gl/maps/pUceeUXoL5iMaMpb6
14th To Marion. Beginning is lame but not bad. Then you get Crabtree, 209, 212 and all that. Crabtee is paved, but I have not been on it in a few years. It could be rough. https://goo.gl/maps/VRrGprbfdvB7hMQj7
15 Straight up 16 until you run out of time to get home then you grab the slab. Marion to Beckly is the best part but it is all really good. https://goo.gl/maps/GCaUDW4S6Db7cHpJ6