Agree with @woogzmama - while the OPs SAT scores are above the middle 50% for UNC-CH, you have to take into consideration that state laws caps out of state enrollment at 18%. Which means the bar is set much higher for out-of-state students. UNC is regularly listed as one of the best value schools in the country, even for out of state. There are a lot of talented students from all across the country competing for that 18% of slots.