My recommendation on a shelter: must be able to handle high winds if you're going to Wyoming's high country. I live in N Utah but cover Wyoming, Montana, and Idaho for work. I have a couple of BA Copper Spur tents, the 2 man is less than 3lbs, the 3 man is less than 4lbs. I still regret selling my Hilleberg Soulo though. 5lbs but absolutely bomb proof in bad weather. I also have a SeekOutside LBO base/vestibule setup with a stove jack. I can use just the base open ended to glass out of or sleep in in good weather, with a vestibule in bad weather, add another base to make it roomier, or a connecting tarp and base to sleep up to 6 people. Versatile setup for sure. Lots of good options out there, just make sure you get something with stout poles. A lot of the lightweight tents get blown flat in high winds above treeline. A little more weight in your sleep system is well worth it for a good night's sleep.
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