Took my brother backcountry elk hunting (DIY) in CO for 2nd rifle. We got over a foot of snow, temps to 12F (never above freezing), decided to leave area as we were concerned 1) if we got an elk we wouldn't be able to get it all out, and 2) our path back to truck included some very sketchy terrain (steep scramble), particularly with snow.
you'll be happy to have insulated boots. You might have weather where you think "man, I could have gotten by without these insulated boots," but if you don't have them you have a reasonable chance to think "man, why didn't I get those insulated boots?"
Both my brother and I had 400gram insulation, gore Tex boots and did well with them. Feet were never too warm, but with toe warmers when sitting at dawn also weren't ever too cold.
Good luck