- The Nanopuff is fine for insulation. All I had on my thru was a MB Thermawrap, and that's less insulation than the Nanopuff. Unless you're planning to spend hours hanging around camp every night, your sleeping bag will be your main insulation.
- I had 6 L water capacity in a dry-ish year. I'd want at least that much this year.
- You can knock off about 5 oz. if you trim your z-lite to torso length.
- I never hung my food once on the PCT.
- Do you need the solar charger? The PCT is easy to navigate--almost no one I hiked with even had a GPS . I would suggest getting some sort of maps, but you shouldn't need a GPS on all day. And if you're not using GPS all day, you can probably skip the charger.
- Do bring a rain jacket in southern CA. It doesn't rain much there, but when it does it will be cold. I used an O2 Rainshield the whole way--6 oz., breathable, and waterproof for $30.
- If you want to save a pound or so on the cheap, ditch the contrail for a silnylon tarp and a bivy. For $30 you can get a cheap mosquito net to hang off the tarp, but with the bivy you'd only need the netting on the absolute worst nets. (BTW, you don't list a ground cloth which adds a few more oz. to your Contrail. With a bivy, you can skip a ground cloth)