First off, don't worry about wearing your daltons in inclement weather. I've got Burgundy shell daltons, and in the last month, i've worn them in calf deep snow at least twice a week. Just gave them a good brushing, cleaning, and a touch of AE cordovan creme, and they look like mirrors. I've had a topy applied to those though, one that is similar to the v-tap, but a with a more aggressive tread. . Shell is VERY tough, in my experience, no need to baby it.
Thanks for commenting on the independence lining being a little thicker. Im going to change mine back to regular lining then. Would love to get purple lining, but doubt thats an option.
As for your Eagle County, those specs, to me, seem really really good. I would go with the light brown transparent edge or brown, the natural will be too flashy. Same goes with the eyelets, I would go with the ones that stand out less. Given the casual make up of this boot,(casual leather, split reverse welt, contrast stitching) adding the flashy eyelets, in my opinion, threatens to make it too casual to dress up. The welt color from those Wilberts would be nice I think.
As for the last bit. The 6-2-1 set up is incredibly dumb. I have a pair already, and they are a pain to lace. Im going to go top 4 as speed hooks, since Allison told me I can't have all eyelets. (If you get all eyelets, the ones that used to be speed hooks will have bigger holes) Remember that the Eagle County is taller than your daltons (about an inch), and has 9 eyelets instead of 7. Since you want to dress this up at times, I would go with the V-tread or tempest tap, leaning towards to v-tread. Its a little more dressy, and would help keep the boot from being too casual.
Thank you for all of the feedback; I really can't argue with any of it. I agree on the edging, eyelets, and speed hooks, and V-Tread really seems to make the most sense. Thanks again for helping me confirm where I was already leaning.