fletch...I can relate. I got to my goal weight almost 2 months ago. That day, I posted my surprise at how my body did not automatically assume all the right proportions that I had expected it to. Since then I've been working on toning up and improving cardiovascular fitness. I assume that continued goals means it's a lifestyle change and not just a "Whew, I'm done now!"
Adding the calories back in has been a little anxiety-provoking for me. It's not an exact science and I don't want to go overboard, so I'm going slowly. I still log food and activity and see that as the way to being successful at maintenance, because information is power and lets me know when I have to make changes.
On the other hand, there really is a sense of accomplishment in being in better shape than I have ever been in my life