Try and apply UL to your "other" kit as well. You'd be surprised how awful it is carrying 95L worth of stuff whilst travelling. This shouldn't be too hard. Adding a second set of nicer travel clothes, maybe a laptop/tablet, phone, chargers, passports etc, and you are done. I've travelled a lot with just one spare set of clothes. Its easier than you think. People don't see you everyday, so no one knows you are wearing the same thing or two things every day...
Going through your list quickly... (good to see the *** for what you are yet to buy, great!)
Nallo 2. Great tent, I half own a GT with my Dad. However, I think its overkill/not that neccessary. I've stealth camped in a lot of countries, and I think with two people, a mid shelter is a better idea. A good mid with a good net inner tent is quite versatile. The inner you can rig up on a bed in a room, just hook it to the ceiling (carry a screw in hook just in case), and use it as your mozzie net. Some people argue for the need for a freestanding, or mainly freestanding tent for cycle touring, but I think thats BS, you can always find somewhere or someway to pitch a non freestanding tent. If you are on a concrete surface, chances are there is a roof over your head already! With two people pitching a mid is superfast, you'll be able to do it blindfolded without talking to each other in the dark in a snowstorm after a couple of weeks.
14 is a lot of stakes, yes I realise a Nallo can take that many, but it doesnt need them. Chances are you will be able to tie off some of the guy lines to fixed objects if needed (and the guy lines dont all have to take a lot of strain). Same deal for a mid-as long as you have four good pegs for the main corners, the rest can use lighter pegs or none at all. I've found having a variety of types of pegs can be handy when travelling as terrain differs. So a couple of v-shaped pegs in there instead for softer stuff if you are on it can be handy.
Considered a double quilt? You have a good pad set up (the joined neoairs), a quilt mates well to this. My wife and I currently have a zpacks. Nunatak also do doubles.
Knife-my next "travelling" knife will definitely be a fixed blade with sheath. Folding knives are a pain long term for kitchen purposes with real food (try chopping up a few tomatoes with a folding knife...). Chopping food gets small bits of food and juice in the handle/mechanism, which is tedious to clean (I've learnt this the hard way). A simple fixed blade is a much better and stronger idea.
gas canisters can be hard to find when you want them (even in europe sometimes; different threads etc), and the jetboil, while great for hiking when you are in your home country and can easily plan meals or by freeze dried, isn't that versatile for cooking in foreign countries. Much easier to have a bigger, wider pot that you can chuck whatever is available into. And you'll want the variety long term! In europe I used a gas stove, and carried canisters for it when I got them. But I was on a bike, so didn't have to worry about transport. Every time you take a plane, you ditch the fuel (and likely the fuel bottle too). At the next locale you have to find it again. Having a light second stove can be handy. Eg a supercat type stove for alcohol in addition.
the new sawyer mini (?) sounds amazing. I wish I could have had that three years ago in Africa. Forget tablets (except maybe a few for emergencies), go with that.
Icebreaker 150s could be a bit hot and useless in much of Asia. Easy enough to buy a local shirt, but, then you are still lugging useless stuff for months. The rab 120 shirts might be better, you can always layer more.
Not sure who you are going to antarctica with, however if its a tour company there is probably a good chance that they'll supply/hire you extra warm gear that you need for it, like big down jackets etc. It would be pretty irresponsible of them to take you down there without it. So you probably don't need to worry about that stuff for now, and I definitely wouldn't carry it for years til you need it.
Best of luck, you are lucky to have someone keen to travel so much with!