Well apparently I'm the only one to think of looking up the actual answers to these questions.
In order to apply for non profit status with the IRS you have to finalize incorporation in the state where you're setting up shop. Then you have to file a bunch of paperwork including your financial history with the IRS. In other words, you have to be set up and operating, it then takes some amount of time to get approval and official status with the IRS. God knows how long this will take, you're dealing with a government agency.
http://www.irs.gov/pub/irs-pdf/f1023.pdf
The IRS has thought of the situation that is occuring with AAWA and made provision for it. If an organization is granted 501(c)(3) status that status is retroactive to the date of incorporation. For the purposes of current operations the IRS treats the organization as a nonprofit and donations to it are tax deductible. Donators run the risk that the IRS will deny nonprofit status and deductions to it will be disallowed retroactively. I doubt this is of major concern for anybody likely to donate to AAWA for two reasons. One unless one of you gave them a whole bunch of money a retroactive disallowance is not going to result in much of a tax bill. More importantly, it seems unlikely that the IRS would not grant 501(c)(3) status to AAWA. AAWA's activities are not going to strike the IRS as a way to hide buckets of money for the incorporators, which is the thing that causes denial of nonprofit status.