Some people do not realize that there are two different tracks for Adventure Trails. There is the Quest Series and Adventure Trails Classic (also known as Adventure Trails: A Christ Centered Guide for the Active Young Man).
When I was leading a battalion only a few years ago, there was only the one option (which the quest update is based on). Personally, I found the greatest hurdle with getting that one off the ground was the look and feel of the book was dated, and the early requirement of getting a mentor was crippling. It would seem that the quest update addressed both of these things, but I haven’t gotten a chance to use it hands on.