If your on flat ground in Idaho; your probably on a road. You need ankle support - because half the time you will be walking on the side of a slope somewhere.
I wore out a pair of kangaroo skin boots in one season - not the bottoms of the boots- but the sides.
I would take whatever pair of boots you have broken in and are used too.
It might be hot as heck here all September; and you might well wake up to a foot of snow.
No way to tell that.
Me- I buy boots online; because there is no shoe store here. I buy 600 gram thinsulate for winter; and 500 gram for the rest of the year.
'Waterproof' lasts a week here in rocky conditions - and you just cannot say where the elk will be; and what you will have to go through to get there.
Spending top dollar for boots would be kinda foolish; because Idaho is a torture test for boots; feet; legs and your heart.
After having lived here in Idaho and hunted it hard for over 20 years; my next boots will be knee high leather top; rubber bottom boots with inserts.
I don't like creeks stopping me; or cold weather; and until you have ridden a slide rock section down a hill- well you just haven't lived.
Respectfully - this 'what boot for Idaho' is a question that flatlanders cannot truely answer- until they have 'walked the walk'. Kinda like me knowing what pants are best in cactus country ..... IMHO.