As a fellow transplanted Michigander, welcome to your nephew to the Fayetteville area.
I can't really help you with the hog hunting since the referenced thread is pretty accurate for the Fayetteville area, hogs in the area, but no public access.
Slightly off topic, he can still enjoying shooting his bow. Nearby Fayetteville in Hope Mills is the Rockfish Bowhunters Club (outdoor range) that welcomes both traditional and wheel shooters, and if he'd like target shooting there is an indoor league year-around at the Fayetteville Gander Mountain range.