Welcome to the HSBBWeb, BZap...and a huge congrats on your 4.5 GPA!!
Like most summer camps at major college programs, the UNC Super Skills Showcase Camp is intended to attract advanced, high school players to work with the host program's coaches and players. They'll be aided by a few small college and area high school coaches; but, you shouldn't expect other major college coaches or scouts to attend. As a result, it's particularly well suited to the player who's interested in UNC as a potential school and baseball program.
If showcasing your talents in front of a variety of schools' coaches is your intent, I'd recommend participation in one of the several showcase events held in North Carolina each summer. Examples would include those put on by Perfect Game, Impact Baseball, and Blue-Grey.
While showcase events will display your skills, they won't instruct you like a more conventional college camp will (i.e. UNC's camp). An interesting hybrid in nearby Virginia is the Best of Virginia event, which combines instruction and showcasing.
Here's a link to this website's list of showcases:
HSBBW Showcase PageBest of luck to you!