if i were you, i definitely wouldn't wait. i have a friend who waited until after his MCAT, didn't have his application ready, and then ran into time problems with final exams (this was last fall after the august MCAT) and then didn't get his application in until christmas break, and was subsequently offered interviews late, and is now struggling with waitlists. although because it is summer, this is not so much a problem as it would be in the fall, i still think it can only hurt you to have your application in later. regardless, you'll be ahead of the game. the earlier the better--- it will feel so good to have your applications in and maybe even some of your interviews out of the way before some of your other fellow premeds have even started the process. i took the MCAT once and i was also afraid that if i applied before i got results and did badly, it would hurt my chances, especially since my GPA was just okay. but it gave me motivation to study hard and really do well on the MCAT and i didnt have any problems at all. good luck!