Looking for input on my clothing/sleep system gear list for a July 15th-16th summit attempt of Whitney. One night at the 12,000ft trail camp then early morning to summit and back. Perhaps warmer clothes or shelter variations than my typical Sierra list below? I haven't slept above 10,000ft or so, so I'd expect colder temps even on July 15th.
Clothes
Long Underwear Top Patagonia Capilene 2 Crew
Long Underwear Bottoms Patagonia Capilene 2 Bottoms
Socks One extra pair wool socks
Pants Columbia convertible hiking pants
Insulated Jacket Montbell UL Thermawrap jacket
Outer Shell Layer Patagonia Houdini Wind Shirt
Warm Hat REI Baclava
Gloves North Face Fleece gloves
Rain Gear Frogg Toggs Dri Ducks (always carry these, never actually used)
Shelter Tarptent Squall 2 (any place to stake at 12kft? could tie off to rocks perhaps? I also have an MLD bivy/tarp system but figured tent is better option on this trip)
Sleeping Bag Montbell UL Super Spiral Down Hugger #3 (30deg rating)
Sleeping Pad Ridgerest size small (48" long) with pack under feet
I also use an ION headlamp, perhaps I should get something brighter for potential early AM start before first light? I've never hiked via headlamp before.

