Get a wall tent/tipi tent with stove for base camp. The ability to get warm and dry out your gear is paramount if you want to be able to hunt effectively day after day.
I tend to toss a bivy sack, my glassing pad (a z-lite pad cut in half), a woobie, and a tarp in my pack daily just for comfort while glassing. It makes an unexpected night on the mtn a bunch more comfortable and about 200% more survivable if the unexpected happens while I am out.
Kind of the middle ground approach between Base camp/spike camp debate.
If you are in the mtns you should ALWAYS have a beanie, puffy coat, rain shell, and gloves with you. This means that even if you are caught without your entire sleep system that you aren't gonna die of hypothermia with the above setup.