For the colder weather make sure you have insulated boots or packs that are up to the challenge.
We all have good boots and packs. We will have to invest in a good tent and sleeping bags.
Somebody mentioned the GI sleeping system earlier. I remember that system well and it definitely did the job, but it also compressed down to about the size of a beachball and weighed a ton. I’ll be looking for a good, backpacking cold weather bag.