I second
@orgoman22 there are many people taking their test in August. Including me, actually most of the dates are taken, that means many people are taking the test during that time.
August is not ideal, but some of us just finished school, or others just trying to avoid gap year and August seems like a reasonable time to take the test.
Think about it this way, even if you scored high but you were late so you decided not to apply this cycle, at least next year you'll be the first person to apply in the cycle with nothing to worry about, you have a year to make your application better with extra volunteering and extra shadowing hours.
One advice though, if you can send your transcripts to adea, that would be good, start on your app, just so you can download the transcript matching form and send it to adea so you can save time coz you can't get the matching form if you didn't start the app and entered the name of the school attended.
But don't submit just yet.
Once you see your scores are getting better in practice test, submit your app, and adea already have the transcripts you have sent, so they will verify your grades with 3-4 weeks and they will wait for your dat score.