What are the best places for outdoors things in georgia or south carolina?

I live in Augusta, Ga and have the option of going to South Carolina or staying in GA. I would like to take about 15 teenage guys somewhere fun and exciting in the outdoors. Rafting, hiking, fishing, camping, kayaking, swimming, zip lines, biking.... and anything else outdoors. I am looking for something that would be overnight and cost about 20-40 dollars per person. Im up for any possible thing to do with them!!!!