New Rochelle to Sag Harbor stopovers

[GreggL]

First boat, first extended trip, please bare with me here.
Just took delivery of my new Hunter e33 and am finally all set up at a home port. Planning my first "big" trip. Looking for a route and some stopovers from New Rochelle, NY to Sag Harbor, NY. Have about two weeks off in August to do this trip and am planning to stay in Sag Harbor for the majority of it. The sailing time seems to be about 3 days each way so I have plenty of time to explore along the way. Any great or must see destinations to stop overnight? Slips at marinas are preferred, I don't trust my anchoring for overnight stays yet.
Thanks!