As Nisslow02 mentioned, Sept 18th is the date of a pretty large Annual Z meet and car show in Austin. it's a judged car show, huge event, blah blah blah. been planned for months.
I would think that date is a pretty big conflict with that event. Planning it for that date would hurt the 350Z turnout from the austin, San An, and Houston areas.
I would suggest scheduling for another date if possible, but I understand you can only please so many people- just there's going to be a pretty big conflict with that date.
keep me updated on the progress as well if you don't mind, as I don't check this forum often at all. HNE_events.at.mattblehm.com
thanks, and good luck guys!