Now I have had my feet sweat up a storm but they were never sweet.I would get some darn tough boot cushion socks and a extra pair for when on stand since your feet will sweet. Put on new socks in the stand, I use lacrosse boots too 800g but when below freezing I add arctic shield booties over the top. I add the hot hands on top of my boot with the booty over the top. Also helps if I stand every so often to give my feet a little movement.
X2I have good luck with the Cabelas inferno boots. Warmest thing I’ve tried. Have to be careful to be quiet walking in them though, they are bulky.