So thinking about joining my two friends both own HD's for a road trip from Hampton Beach, NH to Virginia Coastal Islands and back.
Now my bike Shadow 1100 Aero C3 has 83K miles but runs excellent. I would get the bike completely check out at the local Honda dealer.
Will my bike make it?
If your bike will make it to the store and back, it should make it to the Islands and back just as easily. I'm going out on a limb and assume you haven't had this particular bike very long.........
Excellent idea having a Honda dealer, or any other professional m/c mechanic, go over your bike. Once you get it back, keep it maintained. It's pretty simple to do. 1100 Shadows love the open road. It'll cruise easily at highway and freeway speeds. Some people feel they get a little squirelly at high speeds, but that can be pretty subjective. Mechanically though, the bike should do fine. 83k miles isn't too much for a well maintained bike.
With this being your first (again, I assume) distance ride, you're going to pack too much, and hopefully learn a lot. Some people will recommend you pack an entire extra bike and a full tool set, others (me) recommend the bikes original tool set, a roll of electrical tape and two bottles of water. The correct answer is probably somewhere in between.
Enjoy your ride and hopefully we'll see you back here regaling us with stories of your adventure and educate us on what you learned.