i dunno where you're staying, but you're literally all over the map.
the SI ferry is nice, but.. i'm not sure it's worth going out of your way for when you're in manhattan. also, it just makes more sense to go the world trade center on the same day you plan on going to the Statue of Liberty as they're both on the lower side of manhattan whereas central park is in the upper region. central park would be a good time to visit museums as you have the American Museum of Natural History (proud to have never considered Pluto a planet) on the west side and museum mile on the east side. not that i suggest doing both. and MoMa is near Rockefeller Center.
Rockefeller Center also is a good day for the shopping excursion since it's right by a 10 block stretch of 5th ave (including the World of
Disney Store) that's pretty much synonymous with shopping.
We also have the world's largest department store (Macy's), world's largest Build-A-Bear (exciting, huh?), a Hershey's store, an M&M's World, the world's largest toy store (Toys R Us with the famous FAO Schwartz somewhere nearby), the world's largest Virgin Megastore, the famous Serendipity 3 (which is down the street from Dylan's Candy Bar, a 2 floor candy shop owned by Ralph Lauren's daughter), the Nintendo store and a while bunch of other stuff. the Loew's 68th street movie theater has an 8 story tall imax screen (with the movie ticket prices to match). MTV has a store near its studios. CBS has one near the Ed Sullivan theatre (where Letterman tapes). i'm just filled with afterthoughts.