I've recently worked a lot of overtime, so I have a bit of extra spending money. Well, I did, until 15 minutes after Paul's comment. I've ordered a new pack (Mountain Laurel Super Prophet), water bladder (Platypus Big Zip 1.8L), mattress (Gossamer Gear NightLight), Wind Jacket (GoLite Ether), and a few other bits & pieces. I've also tweaked some of my existing gear, including streamlining my first aid kit, repackaging hygiene items, and eliminating items unnecessary for the specific locale.
The verdict? My base weight is under 10 pounds! I've posted a spreadsheet, please feel free to take a look and offer any suggestions. I plan to review all of the new gear, and detail the optimization steps to get to this weight.