I would like to give a hearty vote for saturday september 4 because:

I really can't make it the 15th of august because school doesn't start till the 27th, and I can neither stay between the two dates nor justify going home between them. I'm guessing it will be the same for many people. Our schools all start at such different times that I don't think we could coordinate for before school, and everyone will be crazyass busy then anyway.

And:

Everyone will be in school, or about to start school, by then, right? This is a good thing because most of is will be in the northeast, but a bad thing because not all of is would be. but, still, i vote for the 4th. anyone else?