Go to
myGMRS.com - GMRS Repeater Directory, sign in, and see what repeaters, if any, are listed.
Additionally, you should program the 8 channels into a scanner and listen for activity. (1 - Just because repeaters are listed, does not tell you how active they are; and 2 - not all owners of repeaters want their repeaters listed, particularly if their useage is restricted to certain people. 3 - simplex activity won't be listed.)
John
WPXJ598
Peoria, AZ
P.S. this post needs to be moved to the South Carolina forum.