I've been told that Georgia will offer "in state tuition" to students from contiguous states. Not sure if that is true or not. My wife told me that regarding our high school age son, but I didn't care enough at the time to look it up.
Re the Colorado schools, I'd tell my son that college is to prepare you for your future, not be a prolonged vacation. If you have the means to finance a summer for him there, then do it. But unless he develops an interest in mining, minerals, or geology, I'd steer him toward a NC public school for his education.
What about skiing ?