Sam, my experience is in the Colorado Rockies, I have not yet had the pleasure of hiking in the Pacific Northwest.
In the clothing section you could use a lighter windshirt. My Houdini weighs 3.9 oz and is hooded, which I really like. I think your Thermawrap jacket will be enough to make up for the loss of insulation in the Precip. I just started experimenting with the Smartwool Shadow's Hoody. The jury is still out, but so far so good. It's a long sleeve merino wool top with a hood, and thumb hole sleeves, and a zipper. It could replace your short and long sleeve tops, your gloves and possibly your fleece hat. The temperature range on my last outing was from 37 to 78 degrees F, and it performed very well. There is a risk in relying on one garment to do so much, however. You might lose over an once in socks. I use 2 pair of Smartwool ultralight cycling socks. They weigh 1.4 oz. I haven't needed heavier socks to sleep in.
Like Andrew, I use one of those cheap disposable rain ponchos. I used it as my only rain gear on a week long trek last season, when it rained every day. It worked amazingly well. I don't do a lot of bush whacking so your mileage may vary.
I had one Light My Fire (LMF) spork break, but I think it was a manufacturing defect. To be honest, I have pretty much ignored the knife. I have a real knife when I want to cut something. What drew me to it was the dedicated spoon and fork. I have a titanium spork and I like it, but I like the LMF spork better, and I can really feel the 7 gram difference in weight, he he :).
There may be a couple of ounces to be lost in your pot. Are you eating out of your pot or just boiling water? Are you using lithium batteries in your headlamp? Photon lights are an even lighter weight alternative, but your headlamp puts out a lot of light. You've probably thought of this this but, do you have something waterproof to pack your sleeping bag in? Stuff sacks usually leak. I break out the toiletries and first aid on my list otherwise they become easy for me to ignore. I think you are carrying far less than I am. That may not be bad. Weight can also be dropped from your pack and sleeping bag, but you've got some great gear there, and you've obviously thought about it.
I realize gear choices are very personal. You have obviously spent a lot of time and come up with a great list. There are are number of items where you are lighter than I am. I have learned from your list. I have no experience in the Pacific Northwest, so take my suggestions with a huge grain of salt. You may have also noticed, that I am biased toward wool.