Hi all, I'm headed to Glacier National Park to do the Nyack Loop and maybe a summit of Mt. Stimpson next week. I've been reading and studying a lot here and I've gotten my base load with a bear cannister down to just over 17lbs. My full pack weight should be right at 30lbs for 6 days which I'm quite happy with. Coming from the midwest and never having been this far north before, I had a couple of concerns with my gear that I was hoping I could get some reassurance or better suggestions on. I hear the weather can get as low as the 20's and highs in the 90's at this time of year. Here's my clothing list:
Worn:
underwear – bottoms – Nike Compression shorts 2.5
base / wicking layer top – Icebreaker 150 T-shirt 5.0
Pants Mountain Hardware Pants 11.0
headband – Buff 1.5
sun hat – Columbia Omni-tech – 1.7
socks – Darn Tough 3/4 height 1.7
shoes – Solomon XT Wings 29.9
Carried:
wind shirt – Marmot Ion 5.0 (contemplating leaving this and using the rain jacket)
Base/Wicking Layer top L/S – Terramar Silk EC2 LS Top 2.9
base / wicking layer bottom – Terramar Silk EC2 Bottoms 3.1
insulating top – Mont Bell UL Down inner 6.5
Insulating bottom – None
raingear top – Marmot Nano 8.5
raingear (hard shell) bottoms – Marmot Precip pants 8.0
Gaiters Mountain Hardware stretch – 1.7
insulating gloves – North Face liner gloves 1.5 (have some warmer windstoppers at 2.5oz)
warm hat – Kuhl Beanie 1.2
spare socks – Ice Breaker mid-weight crew + extra Liner sock 4.0
sleeping socks/Camp shoes – GooseFeet + waterproof Liner 4.1
water shoes – pool shoes 2.0
Waterproof socks – Storm Socks 1.7
My first concern is if this setup will keep me warm enough in camp without a fire above treeline and if a SS shirt is going to be enough to hike in most of the time out there. I have a 25 degree bag so sleeping shouldn't be an issue. Just wondering if SS shirt, silk weight LS, Ion, UL Inner and a GTX pac-lite will be enough given the temp ranges. Sounds like a lot but when I put all these light layers on it doesn't seem like I'm wearing very much. I guess I'm having a hard time believing this getup can keep me warm below 40. I have a brand new patagonia nano puff (9oz) I was thinking to bring as insurance (maybe replace the ION with it and use the paclite as wind protection?) Would this be over-kill?
Second debate is going with the Trail runners. I've only used them on a few hikes down in Arkansas over the spring/summer. I like how they feel but I'm concerned about them holding up and protecting my feet in this environment and weather. I know some of people wear them no matter what condition, but they all have much more experience than I do. I have a pair of mid-height Ecco GTX boots (I think they are called XPEDITIONS) which are maybe 10oz heavier for the pair that I've been debating on bringing instead. Ankle support is not a concern for me, just whether or not I should wear a more durable leather gortex lined shoe vs the lighter non-waterproof mesh synthetic trail runners. I've backpacked the Maroon Bells area (four pass loop) before, but I'm not sure if what we will be facing is going to be the same or not. I was also wearing a pair of gigantic Montrail Torres boots on that trip.
Thanks a bunch for helping me out with this.

