I'm not a rabid hiking enthusiast by any measure, but have been following this compelling thread since the beginning. Interesting. Sounds like it'll be a great trip.
It also looks like, Bob, that you've done your homework and are going first class with hiking gear. So many variables that can make a trip a success or failure, depending upon the right gear for the right conditions. Looks like you've got it all covered.
Admittedly, tho, that's a whole lotta' gear. If you don't mind me asking, how much do you think you'll have invested in trip-specific brand new hiking gear before you take the first step of what looks to be a great and memorable journey for you and the family?
In Sweden they have a saying: THERE IS NO BAD WEATHER ONLY BAD CLOTHING
There is very little that is more miserable than being cold, wet or cold & wet while doing work, hiking, etc. So yes, I am doing my homework on the new gear. I was wearing an old pair of CHEAP 'rainpants' last night while I was out snowblowing the roadway. I literally opened up nearly 3 miles of roadway so I was out for quite a while. Those, so-called 'rainpants' had me soaked through to my butt. So I believe in getting the "right" stuff. I could have used another pair, I have better, but those were handy.
As for how much, I dunno.
Depends upon how you define the clothes. I use many of the shirts that I bought to test, especially the synthetic shirts, all summer as long sleeve lightweight sun shirts. Those could be considered wasted $$$ because they won't be going on this trip. Those shirts probably average about $30 each.
The Merino Wool shirts probably average $100 per shirt. That is outrageous but I love them. I had Merino Wool long ago, I have had it over the years, I have it now. I'm going to take a bunch of those on this trip. Some of them were purchased for this trip, but I wear them regularly.
The Arc'Teryx vest was bought at a season end close out, its not specific to this trip, it cost about $150 on close out, full retail was probably $200?
My LEKI hiking poles were about $120. They are expensive poles, they have features that cheap poles don't offer like a camera adapter to tranform it into a mono-pod for taking photos. They have shock absorbers so my arthritic hands/arms don't suffer from impact shock. You can get cheap poles for $29 at Wal-Mart. You can also get $200 carbon fiber poles too.
I wear hiking boots and hiking shoes ALL year. But the Zamberlan Crosser boots were about $200. Best boots I have ever pruchased. By far. I also have the shoe verson of the same boot. Cost a bit less. Not sure which pair will go with me, shoe or boot.
As for raingear, my new rain/wind jacket was named as the best of the best by Outdoor magazine, retails for about $250, I got mine as an end of season item from Steep & Cheap for about $135. Rainpants cost me just north of $110.
My new backpack from Mammut was $139. Honestly I think it was mis-priced. The same retailer now has the same pack for $179. I have seen it in the $225-$250 range pretty regularly. Needless to say I am thrilled with that deal.
I probably have $200 invested in stoves, I will take only 1 stove with me. Looks like I will probably take the SNOW PEAK GIGA POWER stove. At least that is where I am leaning now. I'll buy the fuel in England. That stove is about $70.
I like DARN TOUGH Merino Wool socks, they are about $20 each. Cabela's In-Genius Merino Wool/Synthetic Blend socks are also very very good, cost about $18. STOIC Merino Wool socks are pretty good, can find them on sale from time to time for $5 a pair, or $18 off sale. I buy them on sale when I can find them.
PRETTY MUCH MULTIPLY EVERYTHING BY 3 since there are 3 of us going on this trip.