I'm a little confused with Wilburn. Some of what I'm reading suggests that its the same exact trail as Rhododendron, but the Nat Geo map clearly shows them as separate.
Still have a lot of homework to do, but right now I'm thinking leave Massie gap north on Wilburn/Rodo to AT, turn west and summit Mt. Rogers. Top off the water at Knob shelter and then continue west to Mt. Rogers trail turning north on it and hopefully finding somewhere nice to camp.
From there work my way around east via Lewis Fork and Cest to Scales and kind of wing it from there.
If that takes a while, I may camp somewhere nearish Scales on my second night. If its early, I may do First Peak and Kabel trails. I'm thinking of packing for 3 nights and just going with the flow. If I'm worn out or sick of the weather I can easily bail early.