You want your birthday to be the one people talk about for years, and a pro magician is a great way to do that. Picking a weekday instead of a Saturday can save you a bundle, so start looking at dates that aren't on the weekend.
Book the talent at least three months out to get the best pick of pros. Secure your date early so you have plenty of time to set aside the cash before the party starts.
The 0% intro APR is a deadline, not a gift. If you still have a balance left over when the 15 months are up, the bank will start charging you regular interest on what you still owe.