Get an insulated air mattress like the Klymit Static V Luxe to put on the cot and take a bunch of chemical toe warmers to keep feet warm. . Also a box, at least of Handiwipes to keep yourself clean after going to the crapper . Wear pair of poly socks under the wool socks to wick away moisture and preven tblisters. I prefer a heavier bullet, but I am sure the 140 gr will do the job
https://klymit.com/products/insulated-static-v-luxe-sleeping-pad?variant=31722981490778
