As it turns out, simplifying something isn't a one-shot deal. Once you clean a room, and throw out all the extra stuff, you still have the room. And you still get more stuff.
Today, I spent hours cleaning those rooms and making sure nothing junked up what I had cleaned up.
On the progress front, I have less food in the kitchen and more in the basement. This is good -- I was using an area of my kitchen as a pantry that wasn't really a pantry. Now, I've moved the extra food downstairs into my basement version of Costco.
Halfway through the first month, I'm feeling pretty good about the progress made!