I'm doing the PCT as well in 2011. I was actually just up on the Tahoe Rim Trail as well a few weeks ago. Are you from Tahoe or near Tahoe? It'd be cool to maybe get together and run over lists and even get a training hike in here and there.
As for your list, here's my input, take it as you like, I'm no expert, but I'm gleaning what I can from all the great lists on here, plus my own experience.
Clothing Packed ( w/ Silnylon Stuff, 25.43 oz)
Mont-Bell UL Down Jacket – 7.47 (Wow...thats lighter than Patagonias)
Sleep System (44.03 oz)
MYOG Down Quilt – 21.0 (WELL DONE!)
Kooka Bay Inflatable Pad – 10.23 (Therm-A-Rest RidgeRest CUT TORSO LENGTH: 6.2)
Kooka Bay Inflatable Pillow – 1.31 (I USE A CLOTHES SACK, DUAL USE)
Cooking and Water (9.09)
Zelph’s Stoveworks Stove + Windscreen – 1.38 (CAN STOVE .5 OZ. / TIN FOIL WINDSCREEN .5 OZ)
20 oz Fuel Bottle - .80
MYOG Heineken Pot – 1.16 (GREAT)
3L Platy – 1.30m (A 2L BOTTLE IS 1.72 OZ. - A TOUCH HEAVIER, MORE WATER IF YOU CARRY TWO, FREE)
1L Soda Bottles (2) – 2.90
OP Sack – 1.55
Ditty Bag (w/ Silnylon Stuff, 18.02 oz)
Petzl-e+LITE - .99 (GREAT)
Swiss Army Classic - .74 (GREAT)
Exotac Nanostriker - .63 (AS A BACKUP? I'D GO WITH 2nd BIC TUCKED AWAY)
iPhone in Aloksak – 5.01 (Consider a Just Mobile GumPro USB to recharge. Uses batteries and converts the energy to a USB plug-in for the iPhone to draw from. That way you don't always have to hunt down a spare outlet)
Nice list, Eric. I'd just look at your sleeping pad mostly, and the pillow. Possibly your stove set up. You could go lighter on that. But what you have now, I mean, you're talking mere ounces, so it may not even be worth it to switch it out.
I'll be posting mine up soon, still working on it. :)