Clothing Layers

I'm not very familiar with the conditions in the area where you'll be hiking, but I think I'd swap out the DriClime vest for the full windshirt. You stated that wind would be an issue for you, so you may as well have the full protection of the windshirt sleeves. Plus, the DriClime vest is heavier than a windshirt and really doesn't wick as well as the full DriClime shirt due to the fact that it lacks the bi-component material in its back half and only has the fleece layer in the front of the vest. You'll be wearing a wicking baselayer anyway, so I think you have little to be concerned about.

I hope that whatever you choose works well for you.

Adam,

From reading your profile it seems that you have some experience on the SHT so ignore my advice if it contradicts your experiences. Your clothing list sounds good for may and parts of june on the SHT but over kill for july and august. For may and june if I were you I would switch from the driclime vest to the ion and take the fleece if the weather forcast is cold. I would also bring warm hat. In july and august I would take the following

running shorts with liner
synthetic t-shirt
marmot ion windshirt(pre 2006 model that actually breathes)
wind pants (only for the bugs)
OR sun hat
ID event jacket or poncho tarp
injinji toe socks (two pairs)
head net

In my experience july and august can be very hot on the north shore and insulating clothing is not needed. Good luck figuring out your layers and have a good time on the trail.

Do you plan to be in downpours for extended periods? If so, then a Gore or eVent shell will be needed. But if you're in and out of wet conditions, and your outer layer has a DWR and dries quickly, I bet that a soft shell like WB400 or PowerShield (from Schoeller and Polartec, respectively) would do the trick, each blocking about 98% of wind. And both will keep you much warmer than Gore-Tex, thus negating the extra weight and space of packing a specific waterproof jacket along.

I second Dan's idea of a windsuit. I've used a poncho in a very windy rain…just ONCE. The wild flapping & wet thighs were not fun.

My Cabela's Rainy River GTX PacLite suit was $79. per piece, parka & pants. Well made, tough, light and useful as a windsuit as well. Gore's PacLite is very breathable compared to stndard GTX.

Eric
P.S.
Bass Pro Shops sells a similar suit

I backpack pretty regularly on the SHT and the OP clothing list is good with one exception, the poncho tarp.

The exposed ridgelines up here can get very windy and I don't think a poncho tarp would provide you with adequate coverage from wind or rain. Also the trails up here are generally narrow with large amount of brush and trees directly on the trail. Because of this I would be concerned about the poncho tarp getting snagged and ripped on the brush.

Finally I would add a pair of gaiters to you clothing list. After a normal rain shower the trail can stay muddy and wet for a week. In fact several section of the trail are muddy and wet all summer. A pair of gaiters will help keep your paint, boots, and feet clean and dry.