Notch it! No matter what the guys from ECE said, you should notch it. Even if it does give you only one more inch of travel (which is bunk) that extra inch or two makes a big difference when you need it.
Besides, right now your thinking all you want is a slight drop. That will soon change. I have never, ever heard any one say "I wish I hadn't lowered my truck so much". I have heard many, many times someone say "I wish I had gone ahead and lowered it some more"..
