Okay, my long-winded set of insights:
You have 9.15 pounds listed for your pack, sleeping bag. pad and shelter. Any competent lightweight camper can get EVERYTHING for a week (excluding food and fuel and clothes worn) to come in under 9 pounds.
Except got the pad, the backpack, sleeping bag and shelter are “traditional” weights. I would advocate replacing (if nothing else) that pack. THere are LOTS of inexpensive lightweight options. (GoLite JAM 2)
THE SHELTER: You are going with three people in the Norther Rockies (after bug season) and you have a 2 person tent with bug netting? Get a tarp for all three of you and you are done.
AND - The Tarptent Double Rainbow is a TWO-PERSON shelter, so, you only really carry half of it, because you'll be sharing it right?
Same with the .9 liter pot, and a bunch of cooking gear.
Stuff like lighter, toothpaste, first aid kit, knife (you only need one in a team, trust me), water treatment, duct tape, bear hang, flint steel, fuel, maps and compass CAN (and should) be shared. Factor this in and you'll be WAY under 16.2 pounds initial PACK WEIGHT.
And- Be a whiny PEST when you pack up, don't let your partners take an extra knife just because they always do! Scrutinize their stuff too.
Create a 3 person team kitchen of gar, don't each of you go in with a stove and pots (etc)
You have a MONTBELL UL DOWN INNER JACKET and a 3.75 pound pack? DOn’t let those two touch, it’s like matter and anti-matter. The universe will implode (there was a star trek episode like this) Also - I have a Montbell UL Down Inner Jacket too, and I love it!
Does the STERI-PEN fit in the Platypus?
You have a 4.4 ounce bandana? No way, that’s too much. Cut it down, of find a lighter one.
The SIT PAD is extraneous for sure, but it is a useful item since you cant cut your NeoAir for a splint or something. 2 ounces of luxury.
Toothpaste, hand sany, sunblock are all listed in weights around 2.8 or so. Each should be UNDER one ounce. Repackage in tiny bottles.
Pocket knife - Yes, 1.8 is light, but a single edge razor is 0.1 oz! ANd it costs 5 cents.
Batteries - Put fresh batteries in on day one and don’t worry. Nix all extra batteries. Are you going for a month?
TP and Baby Wipes? Both? - You can NIX both and be fine.
DEET - Early september in the Northern Rockies is the BEST time to camp! THere will be NO BUGS, trust me on this one. You can leave the deet behind!
CROCKS - these are over HALF A POUND? C’mon...
RAIN PANTS - You have synthetic hiking pants, long undies, shorts, convertible pants AND rain pants? TOo much.
SHORTS - convertible pants are shorts, right? (see above)
STUFF SACKS - you list 6 stuff sacks. If you have a TRASH COMPACTOR BAG (you list yours as a Garbage Disposal Bag (at 2.3 oz) and that’s the same thing. You can waterproof EVERYTHING in your pack. THe only stuff sack you truly need is for food and the bear hang. THe rest are redundant with the COMPACTOR bag.
UNDERWEAR - You’ll be fine with one pair, the pair you wear on day one when you walk into the woods.
GLOVES - 2.5 oz is too heavy. A 1 oz pair of thin liner gloves is plenty for most 3-season needs.
GPS - and a compass, and maps? 5 ounces easily saved.