We probably won't start for a little while yet, but I want to get her used to her high chair. Not to mention that she now officially hates lying down, and it's nice to have a place for her to sit up while we eat.
I plan to just wait for her to cue that she is ready. She is sleeping well, and her hunger needs are being met, so I don't see any reason to start new foods just yet. If she holds out until 6 months or so, I think we'll just skip cereal all together and go straight for the good stuff. Either way, she looks pretty adorable in her chair I got put together Sunday night.