Prep time doesn't include chilling. Ideally, it should be refrigerated overnight before serving. In any event, chill as long as time permits. A few ice cubes come in handy in a pinch. Rounding out your fresh peach supply with frozen peaches is perfectly acceptable. Some gazpacho recipes suggest discarding the crust of the bread before soaking. To me, this seems a waste. In my cooking class, we used it so I did in this recipe as well. Also, the type of bread doesn't matter.