I'll throw in a few more "caveats" as we just went through this drill last summer.

(And yes, it still rains every afternoon at Philmont.)

Crew gear has to meet Philmont requirements so for some things your choices are somewhat restricted. Crews are made up of 8-12 Scouts/Adults. As a crew, we decided what we would take and who would carry it. We spent a year gathering and testing out different gear. Some of it we got through ebay, some from here on this forum, other through fund raiser$$$. Some of it was borrowed from previous year's crews.

Here is a link to a Crew from Arlington, Tx that has sent several groups over the years and seems to have it down pretty goood. This is a link for their home page and from there you can look at their crew gear lists and their personal gear lists. I used these as guidelines rather than absolutes. Some things we took, others we didn't. They do try to cut weight where they can.

http://crew445.org/philmont/2008/

I'm going to work on this over the weekend and see what I can come up with.

Here's the link to the Philmont website:
http://www.scouting.org/HighAdventure/Philmont.aspx

My goal next year is to take some of our Scouts hiking in Arkansas (now that we're in East Texas) and use more of the lightweight techniques that I've learned here.
We'll see how it goes.