If you haven't already, you might want to spend a bit more time there before you decide to do something permanent. I built an O'Reilly's in Bowling Green and one right around the corner in Tompkinsville in 2011. Built one up the road in Carrollton in 2010.
Lived in those areas for about 8 months total. BEAUTIFUL areas. But with big issues and lots of really uneducated and ignorant people.
Great area to vacation though. Mammoth Cave is awesome. Spent four days spelunking there. The lakes in the area are cool. Some pretty nice streams to fish. And, of course, as you mentioned, the corvette factory. That tour was cool.
Just a tad bit too much banjo music out in the countryside for me. My mouth ain't that purty!