Best posts made by aboath

I'd like to wear this jacket in the fall weather of Wyoming (temp range between 25F-50F rain or shine) wearing something like the 1700 underneath while walking the dog, running errands, etc. . Sounds like this parka might be perfect. Any other considerations or insights? Thanks @pechelman @Fades-for-future

I bought this coat online yesterday and should receive it in a few days. I am curious if there are any recommendations/suggestions for treating this coat to make it more waterproof without affecting the fabric in any negative way. I appreciate any insights. Thanks.