RE: long underwear
BuckmasterMN, whereabouts in MN? I live in Coon Rapids, MN, but hunt obviously hunt north of there. I hunt around Big Lake and neighboring state land/wild life refuge and Potlach Paper Company land wet of Hill City during rifle season.
I use some polypropelene tops and bottoms that I got when still in the Army Reserves that work great.
I have heard that the UnderArmor stuff works very well, so could be considered, but likely close to the cost of the Polar Fleece that you have already looked at.