Nice presentation — I like your emphasis on staying hydrated. Some of your Scouts may get to “experience dehydration” on a training hike (and it’s a lesson they are unlikely to forget).
How about a mission statement / goal for your crew? something like, “Everyone has fun / everyone finishes / no injuries — we accomplish that by preparation, hard work and teamwork.” Philmont is an awesome leadership laboratory for Scouts!
Sorry, but I don’t like the temperature graphs — you could throw a few numbers on the chart and it would be much more readable. You note “Few Clouds / Little Rain” — a better description would be “Usually dry with low humidity, except when it is pouring rain.”
If you can get your crew on the trail by first light — you guys are amazing. There is a lot to do in the morning and there will likely be a big learning curve for (at least some of) the Scouts. Leaving so early, you may be packing wet tents and ground cloths — you can spread them in the sun during a long break or at lunch to dry. 550 cord is great for clotheslines (when set up for low impact, of course).
The most important days to get an early start are: Summit Day (e.g., Baldy) and Service Project Day. Those are long ones…
I like that Darwin YouTube video about desert hiking tips — all are very good and I am a huge believer in a long sleeve high UV-factor shirt (such as the fishing shirts that Columbia makes — avail on Sierra Trading Post under $30.) Throw in a $1 cotton bandana and you have a great way to keep the sun off your neck and when dunked in water it is awesome at evaporative cooling when tied loosely around your neck, cowboy style.
Trail shoes are perfect for Philmont and reducing pack weight and taking care of feet will make everyone’s trek much better. Remember that your crew is only as fast as your slowest member, so encourage Scouts to look out for one another. Have fun!! Wish I were going back this summer.