I'm going to take a group of 16-18 year old scouts on a 4 day backpacking trip in mid August. All of us prefer hammocks. We want to cover somewhere between 30 and 40 miles, and be able to sleep in hammocks each night. It would be best if it were a circuit, so we could park, leave the cars, and come back in a few days. We are in Chapel Hill, NC, and would like to make the trail head less than 6 hours away. Any suggestions?