For those with kids and tied to a school season / summer schedule, I would think like April or June UY makes the most sense, allowing for summer - Thanksgiving / Christmas / New Year's travels and a chance to bank points if needed if plans changed, since you need to make cancellation plans 31+ days in advance to avoid holding points.
But yes, as already said Aug. UY works perfect if you don't plan to travel during summer months much, but if you do have kids in school, you may want to leave this option open.
Great3