I actually take 3 pairs of boots if it is a drive up campsite. Lightweight pair that is not insulated. I personally use Cabelas Mountain hunter II (not the tall model, the one that comes up just above the ankle). I also take an insulated lightweight pair (Rockies with 600 grams thinsulate). I also take a pair of Sorrels with the removable wool liners for any hunts not far from the truck when I am going to be sitting a lot, or if most of my hunting will be done from a horse.

I use the noninsulated pair 80-90% of the time. Thin sock in hot weather and thicker wool sock in moderately cold weather.

Be sure and use a thin wicking sock liner under a wool or wool blend sock. Thin one helps prevent blisters and wicks the sweat away from the foot. Doesn't matter how cold the temp is, if you hike in the mountains, your feet will sweat.

If I had to choose one for that time of the year, I would choose an uninsulated or slightly insulated model. If I had to choose one for later in the year, I would choose the Rocky insulated. Sorrels are warmest, but are the worst for hiking in.

Good luck