I use a Stoic I got on sale for $50 a few years ago and it's fantastic. Hooded, 2 oz of 850-fill, weighs 8 oz total, and I wear it to sleep most nights. And I don't wear many layers hiking except first thing in the morning or on a windy/cool day, and that's when the wind jacket shines over my merino base. I'd replace it with a windshirt like a Houdini (3-4 oz?) if they were just a little quieter. And like you said, the puffy is great for warmth when stationary, and the rain gear cuts the wind when stationary, but I find I need a breathable wind layer when moving and cool.
I've played with the HAvalon-type knives, but I love my 1.3-oz Opinel--it's much sturdier. And I'd take a sharpener anyway for broadheads, so that serves double duty. I know a lot of guys like the replaceable scalpel blades, though.
I love NikWax on full leather upper boots, but in my book, all Goretex is good for is preventing feet from drying when they inevitably get wet (from sweat or leaks).
And absolutely, late season is a whole different animal! Not something I've done much of.
Sounds like you've got a great system going...