<p>You can say in your personal statement you want to do a master just for the challenge. You are still young and admission committees understand that and they even say a few cases like you every year at these schools.
Seeking challenges in a fundamental to success in life. .
It is great that you are applying to great schools. Go there and they will take good care of you.
If you like school go to school, especially at this age, you can always go to the big school of life any time later.
You are really smart but do not brag a lot. People do not like it.
Be confident and keep the good work.</p>