Check out a quilt from say Enlightened Equipment. A Revelation or Enigma in 800 loft down will go a long way for the money. Be generous to yourself and get a 20F bag if you think you need it-quilts vent well in warmer weather, especially the Revelation.
You can trim grams here and there from much of your gear without spending much money.
For example, don’t worry much about carrying those spare matches, lint etc (well maybe just a couple of grams of lint somewhere in a tiny snap lock bag, leave it down the bottom of your pack and forget about it). Mini Bic lighters are awesome. Carry two-for about an ounce. They last ages and you can easily buy replacements. You are cooking with gas-easy to light, even if your lighter runs out of gas you will still light your stove. Lighters are so much easier to start a fire with when you REALLY want to vs matches.
There are a few relatively cheap and very light trowels on the market these days that will save you about two ounces for about $20.
Kitchen towel…neccessary? Half a chux at most is all that is required (most I know don’t take anything at all, just shake dry).
Your pot seems a bit heavy. I wonder if you could get away with a smaller pot. Smaller aluminium pots will save you a few ounces maybe. Eg grease pot. Or an Open Country pot.
Scrubby-leave behind and use leaves, etc.
Do you need to carry spare AAA batteries all the time? Your princeton tech should get a couple of weeks of use for sure around camp where you will mostly be running on low. Over time your skills in camp will get better too and you’ll be able to do most things in the dark or by moonlight, etc. Don’t stress about spare batteries.
45m is a lot of spare cord. Need a few m at most.
You can probably be a fair bit under 100g for your FAK.
Practise. Get to know temperatures and what you can handle. Take note of your condition (Are you tired, wet, well hydrated and fed, not sick). Take note of what you are wearing from your list. What is the temperature, wind speed? How far can I take my layers right now? If it gets colder, what am I going to do? (ie, you can always camp and get in your bag/quilt, have a hot meal, etc). Put all your layers on, including your rain jacket, overmitts. Then decide if your warm layers are enough for you. Its hard for us to give advice on warm clothing given people are quite individual in this area (if it was me, your clothing would suit me down to sitting around at -10C no worries…). Nothing wrong with practising this near home before your trip, in fact that’s an ideal time to (as you can push the limits safely, and also, you can easily look up real time local temperatures and wind speeds to build your knowledge base on)…go for walks at night in bad weather without a pack. Stop and sit in a park in a bad spot in the wind for a while to force yourself to cool down. Etc.
Best of luck :-)