First my backpack: this was the wrong thing. It stores a lot and is quite comfy, but in expanded mode it puts a lot of weight at a good fulcrum from your body. This isn't a good way to carry a lot and so my strength was my strength. Better choices, by far, for the volumes we were toting would have been things like the Osprey Mike had or the Gregory Marcus had. They distribute the load over a frame and run it vertically to minimize the cantilevered load.
The tarptent sublite: excellent. Effortless setup, very light, very compact, and very space conscious. Plenty of space inside too.
Hammock tent: Mike's setup was a little heavier but he said it was the most comfortable he has been for being on a frozen peak.
Arc'teryx cap and fleece: yes. Long underwear. Two pairs of socks. This tropical native was doing OK at least until nightfall.
Now back to story time. After the sun had given us a sufficient show I figured it was time to test out the astro rig. I packed a case, climbed and started to set up. A freezing mist blew over constantly while I did my best in the dark. Aimed at the north Star and clicked on the first shot
What?? Flashlight on. The entire rig and camera, lens included, covered in dew and frost. I tried to clean it off and give a few more tries but it was useless. I was shivering and there was no hope of a payout. I packed up and hiked back down to the camp.