RC,
I'm not Reddress, but I have traveled the area enough to know these sites.
It is about a 5 - 6 hour drive to HH, depending upon how heavy your foot is.
I am going to the Charlotte area tomorrow, and I can make Charlotte proper in about 3.5, a bit less if I take a less circuitious route. The problem with the more direct route is that there are more small towns, hence more stoplights and slow speed zones. In the end, both routes intersect somewhat North of Salisbury and follow the Interstate the remainder of the way.
CyberPro