Don't scrimp on rain gear; like boots you get what you pay for so get good stuff. Google hunting rain gear and do your research: what you are looking for and what works for you might not be what works for others.
A prime example of this is the difference between my brother and I. I rarely wear rain pants (or even thermal bottoms), even when the conditions are bad. I'm short enough that wearing a quality jacket (not a tight fitting at the waist one, but one that hands below my belt), and good pair of waterproof, quiet gaiters keep all, but a small area of my thighs covered. I create a lot of heat when I'm hiking so the tech pants I'm wearing shed the water pretty quick. My brother on the other hand won't go without them when the weather is bad or threatens rain/snow. yes, sometimes in a hard sustained rain, water can get under my gaiters by running down my leg but generally I don't hunt when it's raining that hard, and if I happen to get caught in a squall like that, I have a quality, poncho I pull out and put on: it takes care of that potential issue.
Get a good quality light weight poncho and a heavy-duty emergency blanket... these things have come in handy on several hunts where unexpected storms caught me well away from camp and kept me safe, even when the temp got below freezing like on the North Slope and the Alaskan Peninsula.
Fit of your clothing, quietness and No Cotton are critical to hunting in areas where the temperatures can go from 50+ one day to blizzard like conditions the next and back again which is the high mountains of the west. I usually have lighter weight high Tek synthetic pants/shirts etc. as well as heavier to include fleece on any hunt I go on, especially if I'm not packing for a bush plane fly in hunt where weight is limited.
I don't a magic bullet because honestly, my gear is a mismatch of what I like, what I've found works, cost and how long they last. I have a mix of Cabela's, Kuiu, Sitka and Kings to name a few. Some of them are matched jacket, shirt and pants, others a mix of different brands.
Hope that helps and good luck on your hunt in Idaho!