I scouted Aug and then hunted Sept at 12k last year. Less layers BUT don't ditch the puffy pants either, there were some cold mornings depending on the weather. Mine is merino -> fleece -> puffy -> lighter rain jacket for torso. 145merino bottoms -> attack pants -> kenai pants for the bottom and I leave the rain pants at the trailhead.
I used an LBO floorless just fine, just tuck out of the wind best you can, pitch it to cut the wind as needed, keep it lower to the ground, and use guylines. My 35deg bag left me chilled one night in Aug, I brought my 10deg out in Sept (if I had a 15-20 that would have been fine but 10deg is what I had).
I used an LBO floorless just fine, just tuck out of the wind best you can, pitch it to cut the wind as needed, keep it lower to the ground, and use guylines. My 35deg bag left me chilled one night in Aug, I brought my 10deg out in Sept (if I had a 15-20 that would have been fine but 10deg is what I had).