Siler use to be perfect example of true North Carolina Southern town.
I would definitely visit both cities and see if the demographics will support your buisness.
City Data demographic information
Siler City
Estimated median household income in 2005: $33,100 (it was $33,651 in 2000)
//pics.city-data.com/craces/15643.png (broken link)
Population (year 2000): 6,966. Estimated population in July 2006: 8,449 (+21.3% change)
//www.city-data.com/city/Siler-...-Carolina.html
Pittsboro
Estimated median household income in 2005: $35,200 (it was $35,800 in 2000)
//pics.city-data.com/craces/15558.png (broken link)
Population (year 2000): 2,226. Estimated population in July 2006: 2,501 (+12.4% change)
//www.city-data.com/city/Pittsb...-Carolina.html