Hosting a gender reveal party comes with hard deadlines. Custom bakery orders and specialized decor take time to make, so ordering three weeks out keeps you from paying rush fees or settling for generic options.
A typical gathering runs about $400. Giving yourself an 18-month cushion to clear that balance means you can enjoy the celebration now without stressing over next month's cash flow.
Keep in mind that an intro window is a fixed deadline, not free money. If you still have a balance when the 18 months end, interest kicks in on whatever is left, so stick to your monthly payoff target.