I might skip Marina Cay if you truly have 6 days and 5 nights - the rest of the above looks good.

If you head up to North Sound, contact Nick at Leverick Bay and you can reserve a slip - same cost as a mooring ball -- includes ice and water fill up -- electricity is extra.

You can stop at the Dogs for a snorkel on your way to North Sound. You can snorkel at the Indians and the Caves around your Norman visit.