You have the wrong boot..........for something. No single boot will ever satisfy all of your needs for all occaisions.
I was born and raised in Northern Wisconsin and it seems as if my feet were always cold unless I was walking or working.
The old fashioned " Pac" boot came in several forms. One had no insulation and was better for walking, it had a rubber bottom (shoe) part and leather uppers which laced. The alternatives had various " Liners" usually made of felt which you pulled on over several layers of wool socks. These invariably got wet at some point during the day and the evening was spent getting all layers dry for the next days activity wheteher working or hunting. Many an evening was spent in various hunting camps around a fire or stove, telling stories, playing cards etc, all redolent with the ambiance of " Eau de Boot" wafting around the area.
Today you have so many choices that it is difficult to choose from all of those available and what works for me probably wont work for you. You alone know and understand your comfort level as far as warmth, and only you can choose a boot for your style of hunting, whether it involves sitting on a stand, walking or a combination. The terrain will also play a role in your choice of footwear. Rugged country will require a boot with better support than the flat lands and a well broken in boot is worth its weight in gold for any hunting situation, never wear a new boot for the first time on a hunt of any length, especially without having a back-up pair available. Sore or cold feet are guaranteed to ruin even the best day.
For me, 600 grams of thinsulate are way to much for any situation that requires any walking at all. My feet begin to sweat very rapidly and even with the Goretex linings in todays boots, that means wet feet which in turn means cold feet at some time shortly after you sit down and are no longer moving your blood around. For you it may be exactly right.