jb,
Seems like no one from Wilmington is coming forth so I fill you in best I know... My family is originally from that area so I know it pretty well. The bottom line is "No". There are no good roads in Wilmington; unless you own a Hayabusa.
Seriously, everything down east in Carolina -motorcycle-wise - is flat, straight, sandy, and hot as hell. The good side of it is, there are TONS of crazy smokin hot lit'til hottie-pants' runnin wild down at Wrightsville beach and Myrtle Beach or any of the beaches all summer. There is more to life than motorcycles...right? Ok, not much more.
I think you said you were going up to the mountains to Deals Gap and all while you were there...? That is where you will find good roads.
Sorry dude,
VE