Nice boating circle route

I am looking to plan a route, starting in the CHS harbor, i.e. The wapoo cut ramp or remleys ramp. I would like to head out, go south through dynamite hole, then come back in somewhere and circle back to the ramps. Somewhere around 2-3 hour trip. Something I can do when parents come in town and just want to take a cruise on the boat. I could even go out the harbor, out the jetties and to the north if that is better. I have heard not to enter the stone inlet but that would be perfect. What about the Edisto inlet? Anything else out there to make a nice route?