>>>I'll check the Long Island: Good Ride Today? thread and then let you know if I have questions as we piece together our route.<<<<

Regardless of how you go, I would try to pass through Mystic, CT with maybe a side trip to Old Stonington Village, Misquamicut Beach in Westerly, RI, and Narragansett Beach (Rt. 1A) in RI. After that, you can take 1A straight to the Jamestown Verazzano Bridge (not sure how to access it, but you need to do some sort of rack-n-ride thing here) and then cross into Newport on the Claiborne Pell Bridge (another rack-n-ride, I believe). There's some nice riding in Newport, but you'll probably want to just get over to the Cape by that point.

This sounds like a great ride. I'm totally envious.