If you want to appeal to Kids puns are fine, as long as they get the references. But who is booking you? The teachers I bet. Puns would definitely get their attention. I agree about spelling, though if you are at all net savvy that can easily be got round.
Include all mis-spelling you can think of in meta TAGs, or if you insist on using MySpace/YouTube include the mis-spellings as an aside by pointing out you are not spelled like "xxxx" or "yyyy". Not sure how those websites are catalogued, (by themselves or in search engines).