I just got a pair of kenetrek desert guides excited to try them out. No gortex like most other boots to keep things cooler.
Have the lowa zephyr as well, they’re an awesome boot, just didn’t fit my foot well.
Depending on what you are using them for trail runners might be the best hot weather...
Not sure about the temps you mean by hot weather but I have been trying to find the best hot weather pants as well. A zone deer in northern California specifically. Triple digits regularly, even though I am not actively hunting during these hottest parts of the day I might be moving or enduring...
I have the large and I am 5'10" 165. Sleeves are almost to the middle of my palm when I am only wearing a t-shirt and it is meant to be cut short for torso length. Plenty of room for a mid layer and puffy if need be. I'd guess large for you as well.
Delta Wading Jacket is still my favorite duck hunting piece of gear. Get that and you can wear any piece of non-camo insulation you already have under it.