I agree that taking a troop backpacking should be done in a lightweight manner, consistent with the skill level and safety of the scouts. This is a good way to instill a love of the outdoors in youth.

However, the OP said the destination was Philmont, and if he is really planning on taking scouts on a trek at Philmont, that location comes with a set of rules, which may not be known by most on this group, and which emphasizes safety and durability more than lightweight.

Therefore, all our help will be of use for general troop backpacking, but some of our favorite gear may not be appropriate for a Philmont trek.

It is possible to go lightweight to Philmont, but as the crew size is defined as 7-12 people, it is very different than a few people going backpacking by themselves.

Even with a bit more weight than I might carry in the Sierra, Philmont is still a beautiful place and a memorable adventure.