Is it help your chances with admission and scholarships to send in the common application next week?
Unless the college has rolling admissions, no. The benefit is that the weight of the world seems to be lifted once the application is sent.
@bobby17 The earlier you send your app could help. Waiting just means there will be less funds available to offer a qualified student. If you have thoroughly looked over your app and have edited and reedited your essay, I don’t see why you should submit it. Keep on top of your school so all the other aspects of your app gets sent and then relax and enjoy your senior year. Of course, continue to maintain great grades.