Do you have the names of John and Elizabeth's nine children? I, too, am trying to make sense of the SC Hales of the 1770s/1780s, and it might help me see a connection if I knew their names.
I am primarily researching Daniel HALE (b. abt. 1732) and his son John (b. 1770). One of them is the father of my GGG GM, Nancy HAIL of Anderson Co. SC. There is a possible connection, still speculative at this point, to the HAILE family of Kershaw County.