Sounds like you've gotten some good advice here. I totally agree with all the comments about wearing less in the beginning. If i know im going to be going hard for a while and then stopping to hunt, or slowing way down, I will wear the minimum amount of clothing. I know that when I am moving with all my gear that Ill heat up rather quickly so i try to start cold. If i start to notice my sweat ill either stop or slow way down for a bit, and possibly even take off some stuff, if possible.
As far as brands, some good ones that I know of are Smartwool, Columbia, REI etc. That Sitka
stuff sounds pretty nice. And when a piece has that bacteria stopping silver in it then i guess one could also assume that your odor will be less potent which could be the difference between meeting up with that trophy animal or not. food for thought.