I think it would be a shame if you wouldn't be there. We've already waited a couple of months, so waiting one more week doesn't really matter. That said, I can come on July 4, but after that I can't come until August 8 (or 15 or 22).
I think so too and would also prefer postponing the meeting ! For me, however, it would be much better, if it took place in August.... I don't mind, if it was the 8th, 15th or 22nd.
Cheers,
Kilian