one super versatile piece is the neck gaiter, it doesn't take up much room either.
I totally agree with this....either the neck gaiter of the lightweight balaclava. They don't weigh nothing, and are versatile pieces for sure. Its ALWAYS in my pack along with the super light weight gloves.
Here is a recap of our system, which isn't totally dialed in yet, but might help. First off, I wouldn't recommend wearing the base bottoms for hiking around during the season you mentioned. Way to hot. That being said, we do take them (just in case) and are used at night in the sleeping bags typically.
We hunted NM in early November, so here is the FL system we used. Llano long sleeve base, followed by chama quarter zip. Those damn thumb holes are SO NICE to have by the way...LOL...use them all the time. I may switch and try a chama hoodie instead of the quarter zip. I originally thought the chama hoodie would get in the way because the puffy has a hood. But everyone seems to rave about the chama hoodie, so my theory may be off.
For cool to colder weather, we also have the Labrador or the vest either on or packed...depends on what we are doing.
From there, the Puffy Jacket goes in the pack. If hiking in moderate temps, it wont be needed until you stop to glass or rest. For pants, we have been wearing the Kanabs. I bought a set of the corrugates to try for next year during early season hunts. I will say the kanabs by themselves get cold when the temps get near or below freezing if we don't have the base layers pants on. The problem is that when we tried those base layers under the kanabs, it was too warm when hiking. We also wear kenetrek gaiters. These kept our lower legs dry when walking through the dewy cold morning tall grasses.
In listening to the gritty bowman podcast, there MAY be some type of Puffy Pants on the horizon. THOSE would be SWEET! Light and packable, and throw them over the kababs when we are sitting still. If they come out over the winter, I will be looking at those for sure.