i am not a commuter so i can only give a tiny bit of info for you to consider....

ILM has a handful of commuters from expressjet, delta, and airtran going to atl. Not as "easy" as you may think, but in no way is it a ft. walton situation...

IAD you at least have a two options. You can go to IAD or DCA....which is a HUGE advantage.....

But yes...i would avoid a two leg commute whenever possible....