As others have said unless you want to spend $500+ and maybe get the shelter in time I think one pound is a little ambitious for a 2 man "tent" for Philmont.
The Duomid (MLD) won't cut it, no floor and it is 26.5 oz with the inner net. You could have your buddy fend for himself (not very scout like) and get something light like a TarpTent Sublite (18.5 oz if you use poles) for yourself. But for two people I recommend a TarpTent Double Rainbow (40 oz with stakes, what my son and I use) for $260, or a Six Moon Designs Lunar Duo (same weight when you add stakes) which has a little more room, and costs $310.
Lastly the Gossamer gear Squall classic is only 28 oz with everything, but is the most expensive @$325, has the smallest vestibule (and only one) and the least amount of room.
I recommend the Double Rainbow over the TT Squall or Cloudburst because of the 2 doors and vestibules. The vestibules are large enough for each person to store their gear out of the rain and its nice to have your own door in the middle of the night.