Andrew, replace the fleece pants with a nylon shell pant or a rainpant like the Golite Reed. The Reed, or similar waterprrof/breathable, gives you rain/wind protection or just warmth and it packs small. Fleece although warm to wear adds a lot of bulk. The rain pants could fit in a pocket, Instead of converta pants you could just take shorts and use your rain pant as your long pant alternative.
Michael. How do you carry the thinlite? Do you roll it up and carry it on the outside? Do you use the cut-into-panels method and fold it so it fits inside your pack. I have been using 3/4 z-rest, but it has gotten a bit thin! I have a thinlite pad, but I find it bulky to carry. I was considering a 3/4 thermarest (13 oz., until I read your post.
As a section hiker, I have hiked more than 1/2 of the AT.(ME to PA)(GA to VA) I use a tarp instead of a tent. Hiking in the spring, August or the fall, I am often alone in shelters, but I always carry a tarp, sometimes just for privacy away from a shelter, and once when a swollen river blocked me from getting to a shelter. Although it was raining heavily, the tarp gave me a good shelter. I use a bivy only in the cold weather, fall and winter, to block cold drafts. An excellent shelter that also has mosquito netting is the SMD Oasis. Try tarp camping, Michael. It will save you a lot of weight.
Take the handle off your Sweet Water filter, you will not have to fumble around setting it up and it packs smaller.I like the fold flat plastic bowl, don't forget you spork. I've gone from a gas stove to alcohol, to esbit and lately wood. Gear is everevolving. Have fun. Look for a frameless pack, another great weight saver.