Hi Leap Frog,
I don’t really have any comments about your gear list except to say looks like you are on the right track over all. Just be ready for some fairly cold weather which is likely enough that you must be prepared for it, but I’m sure you already know that. Except, did I see you have no groundcloth? No worries about keeping your quilt dry? And you mentioned waterproofing your quilt. Do you mean a WP storage bag, or do you mean a WP quilt shell? If the latter, are you concerned about condensation inside the quilt?
I have made many, mostly 5 day, trips there over the last 30 years, with the majority in the 1st week of Sept. Weather has been all over the place. One was blue bird skys every day with lows every single clear night at 20F. My all time low for this range 1st week of Sept was 15F following a day or 2 of cold rain. My partner on that trip almost froze that night since some of his clothing- which e also slept in- got wet hiking all day in the rain, and the foot of his 25F down bag got pretty wet during the rain all of the previous night. In retrospect, I don’t think rain got into the tent, so much as I suspect he either had condensation or sweat problems. Either way, he woke up with a wet bag foot area, then had to pack up and hike all day in the rain. We had 40F lows or warmer every night until that last 15F night. Another time- though it was June, lows were about 40 or warmer all month until June 27, when it snowed for about 24 hours straight, about a foot or more, and that night the temp dropped to about 24F. We were all pretty damp after hiking all day in the snow ( probably mainly from sweat), so that night was quite a challenge. A snow loaded tree limb broke and punctured the tarp of one friend, dumping a big load of snow right down the face opening of his mummy bag! His comment? “Live and learn”! LOL!
But this should give you an idea of what to expect, though you can have much better weather I suppose. But the above is NOT uncommon. So, you probably know what you need to be safe and warm enough in such conditions.
I have never carried a dedicated wind shirt, I have just always used my WPB shell. Like John said, I don’t think it is windier in the WRR than other places, but that is not to say it can’t be plenty windy and cold.
Enjoy your trip, give us a report! I am starting to think about a Sept trip either in the WRR or Sawtooths, have not been to either in 4 or 5 years now, my longest absence since the 1980s.
Bill