Well, I figured I would circle that wagons and follow up on my original post. I can see there was some contention and such and it seems gear talk can also turn into a Ford/Chevy discussion.
I went with Kuiu and their merino wool under layers and they performed flawlessly for the 10 days we were in the sticks. I was never cold, always dry and it was the little things like side thigh and underarm zippers that I really found myself liking a lot - lets the heat out. The merino really wicks moisture quickly and dries unbelievably fast.
Being able to zip off your long johns or puffy pants without having to remove your boots is a game-changer. I did go FL boxers because I scored them on discount and I have nothing negative to say about them The Kuiu carbon fiber pack was just awesome and capable of carrying much more than I can handle. The rest of the Kuiu gear (bino harness, gloves, etc) were just as top notch.
Socks - I went with Darn Tough out of Vermont. Hands down the best socks I have ever worn (wearing a pair right now). Not sure if it was the socks or my Crispi boots, or the combination thereof that I bought out here in Italy but not a blister to speak of. I simply cannot say enough great things about the Crispi boots.
MVP of the trip were the gaiters. I will never go hunting anywhere without a pair again.
I spent some coin on all of it, but I have it for life and am **** glad I bought once/cried once.