Are my Plasma concerns worthy of consideration?

[Zman2k2]

I've been contemplating getting a new HDTV, and plasma's have been in the forefront. However I have some concerns that I'd like an answer to. My big question, how important is break-in? Reason I ask is that this would be the main TV in the house, and I'm not sure I can convince my 6-yr-old to watch out for things like image retention. I work until 6:45pm, by that time, my wife and daughter have had dinner. According to my wife, my daughter pauses LiveTV in order to eat. Then she comes back later, about 20-30min. Also, the programming she watches isn't full screen, but rather 4:3. It also has a station ID image in the bottom right corner. My concern is, that on a new plasma, all this together is just begging for burn-in or serious IR. Are these really concerns, or should I not worry?