If you head north to Rehoboth or Dewey, head west too. (Actually, the same is probably true of OC.) The areas around Route 1 are terrible for traffic, and even the secondary roads are getting more and more crowded. I was in Millsboro today for work, and couldn't believe the volume on secondary roads taht I used to ride when I lived in Lewes.
Let me dwell on this some more, and maybe I can come up with a better response. Or maybe Withm will have some ideas.