We're planning a combined backpacking/car camping trip in April. The idea is to do one trip that allows the older scouts (ages 14 - 17) to go backpacking and the younger scouts (ages 12 - 13) to do a couple of day-hikes from basecamp. Can anyone recommend locations that would be able to accommodate both groups? Somewhere with a large group campsite for basecamp, a couple of moderate day-hikes for the younger scouts, and a moderately difficult loop backpacking hike for older scouts would be ideal. Your recommendations are much appreciated. Thanks!

ETA: Due to travel constraints, we're most interested in hiking the Blue Ridge between Natural Bridge and Front Royal.