Scrapbook and Rubberstamp Rummage Sale

We've been asked several times to hold our Scrapbook and Rubberstamp Rummage Sale twice in a year. Most sellers don't have enough things to sell 2x a year, so we started looking for new sellers. For last minute planning we did very well last Fall. April is the perfect fit for a Spring sale, but when is the perfect fit for a Fall sale?? With last minute famly vacations, back to school shopping, new routines with school and then Oktoberfest - your guess is as good as mine. So that we make the right decision, let us know what you think. We've love to hear your opinion on this topic.