At the High Herf Council, we agreed on the last weekend in April. We acknowledged then that no dates were perfect, that somebody wouldn't be able to attend. As I said then and repeated in this forum, dates don't matter to me, but others need to know in order to make plans, arrange schedules, etc.
My vote, stick with the original agreed on dates. To those who can attend, great. To those who can't, we will raise a glass in your honor.