I think you just made up my mind to revisit my own bag. This is very well thought out, packed and assembled, not to mention redundant in all the right places. I'm Loving the tyvek FedEx pack idea. About the only thing missing is a bit more trauma gear in the FAK like triangular and maybe you could vacuum pack some more 4x4s, etc.
The only thing on your list I didn't see was a headband/bandana, but the thermolite cap probably covers that. Then I read but didn't see this item:
1 x Buff® Original Multifuntional Headwear, 12-in-1+ Styles, 100% Polyester Microfibre, Indore Blue
I'm not familiar with it, but sounds pretty cool.
With all that fire and light I'm surprised you don't have a 9v battery with an LED cap plus a ziplock with some steel wool. :-)
Massacre looks from his own fairly well prepared bag to this post and blinks in admiration.
Well done and thanks for he ideas.
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Experience is a hard teacher because she gives the test first, the lesson afterwards.