Thanks for sharing your profile. I would say based on the information provided I think you are fine on your GMAT and given your high GPA I don't think there should be too many questions about your aptitude. Your verbal score looked a little low so hopefully you're TOEFL score will not cause a red flag here. With schools like USC and UW I would also recommend showcasing your interest and highlighting fit where applicable. Although you stated you had minimal extra-curriculars sometimes hobbies can serve as an insight into your interest into how you spend your time outside of school and work. If there is anything relevant there I would find a way to incorporate so you don't come across as too one-dimensional

Hope this helps!

Thanks for your reply and I am actually graduating from Central Washington University (CWU) next year, so TOEFL is waived in my case.

Considering you are a Chinese applicant (higher GMAT scores), I would suggest you to retake the GMAT. Remember, the schools only look at your highest scores.

Best of luck,