In a few weeks I will be visiting family in Alexandria, VA. I would like to take my adult son on a 2-3 day hike on AT in Shenandoah NP or Harpers Ferry. Prefer to use a shuttle service or I can do a loop. Thinking 10-15 mi per day. I've hiked all of AT in GA several times but have never hiked in VA. Both experienced looking to spend time together hiking and enjoying beauty of outdoors. Any suggestions?