If you can manage to stay outside past
Georgia you'll save a lot of time. The ICW in GA follows natural river channels and is not very good for making time. One of the issues is that the
water is shallow far off shore on a lot of the GA inlets. I suggest you try Sapelo Sound. Be warned that the tidal range in GA can be 13 feet so you need to be careful where you
anchor. I also means that the tidal currents are quite strong. You probably want to plan to arrive on an incoming tide and depart on an outgoing or it can be a long slow slog through those inlets. The entrance at Sapelo has deep
water closer to shore than the other GA inlets and makes it a bit easier. It's about 68 NM from Jax so that should
work for you. Next I suggest Charleston. It's a deep inlet and an easy entrance with good facilities. If the
weather doesn't cooperate the entrance to the ICW is pretty close to the inlet and will let you duck inside if you need to. The ICW between Charleston and
Georgetown is pretty straight so works pretty well.
Georgetown is the next inlet north of Charleston and would make for a short day on the outside. You can
anchor up not too far inside the inlet at Georgetown. Don't go all the way up to Georgetown though unless you're planning to do the next leg inside. Between Georgetown and Cape Fear I can't reccomend any of the inlets for a sailboat, but Georgetown to Cape fear is a pretty easy shot. I would go in Cape Fear and out of Masonboro inlet. From Masonboro the next inlet I would suggest is
Beaufort.
The longest leg I have suggested is the Sapelo-Charleston leg, right at 100 miles. If that seems too much I have gone into Port Royal sound which is about half way but the entrance channel starts pretty far off shore so it's a long trip in and out. The ICW
route between Port Royal and Charleston is about 75 miles so once you get inside you might want to stay there to charleston.
Have a good trip