Yeah, a few places you can save.
Pack: I like a Gossamer Gear Murmur for shorter 1 week trips. Weight is about 10oz.
Pad: About the same, I use a NeoAir medium, old style at 13oz.
Bag: I use a 227oz, 32F bag. In summer, I open this like a quilt.
Rain Gear: I have a 6oz rain jacket, Eddie Bauer jacket. My legs get wet. My feet get wet. My shoes will generally dry out over night, same for my pants. My sleep wear, is long johns. These, sleeping socks go in a compression bag with my sleeping bag. ~8-16oz for all, depending on temps...two weights: UL and regular weight.
Down Jacket: 10 oz or so, good to about 32F.
Steripen Opti, batteries are about the same.
e+Light, and Impulse. About 3oz.
Cooking: Caffin Stove, 8oz canister, windscreen, grease pot, cup, spoon, about 18-19oz
Tarp: 14oz (includes stakes/guylines)
2-500ml GatorAid bottles: Old ones with the wide mouths.
Misc gear: first aid, repair, fire starter, bear line, etc: 5oz in throw bag.
1 spare set of socks for the anticipated water: 3-4oz
Light Weight Fleece sweater for general warmth (quick dry)
Total is around 7-9 pounds, I will also bring a saw, ~14oz if I plan on clearing trail. Two trash bags for junk I find in the woods.