I agree that you likely won't want down pants. I don't know what kind of snow year this is shaping up to be, but the idea of a NOBO sending home snow stuff while still in Colorado seems kind of amazing to me. I hiked SOBO in 2011, a fairly high snow year. The NOBOs were still dealing with substantial snow through the Winds.
I own a gatewood cape and net inner combo, and wouldn't have wanted that on the CDT, particuarly if you're also taking any other sort of rain jacket. You could probably get by with the GC as rain gear, as I think that the amount of bushwhacking you have to do is overhyped, or at least the type that requires pushing through a lot of brush or the like. Still, there are more places on average than on other trails for a flapping poncho to catch onto, putting both raingear and shelter at risk. The main thing for me is that, like on the PCT, you spend most nights in the shelter (I did cowboy camp somewhat in NM). So for me at least, it's nice to have something a bit roomy. When you add in the net tent, the GC combo doesn't save a lot of weight over a much more roomy, comfortable shelter. I find that net tent really constricting.
Yet OTOH, my recollection is of less bugs on the CDT than the PCT (again, my direction, my year). GC with no inner tent, just a head net, and a windshirt might be okay. I personally was happier on that trip with a light rain jacket that doubled as windshirt.
It's really hard to talk about conditions given differing directions of travel and year, but FWIW I think I only slept on snow a couple of times, despite walking on a whole lot of the stuff.
When you're counting up total weight, don't underestimate the volume and weight of the PAPER you might choose to carry. There tends to be more of it on the CDT. I carried Wolf, Yogi, BLM (mostly not, but a couple of times), DeLorme Atlas, and of course Ley maps. I also carried the newer "one route only" Bear Creek Survey maps, http://www.bearcreeksurvey.com/ for the portion that was mapped by them at the time (they have the whole trail now). Quite a conundrum there, but a good compromise IMO is to look for a place to print Ley in oversized format. Anyway, navigation really is more of a challenge on that trail, so it can be a lot of weight of paper leaving trail towns, depending on how many boxes you have (or how often you bounce resupply stuff).