Should I Retake the SAT with Essay?

Hi all.
I am a sophomore enrolled in a Japanese University. I am looking to transfer to a university in the US, and I was wondering if I should retake the SAT just for the essay section. I took the SAT last semester and got a score of 1450 (680 for reading and writing and 770 for math) and a score of 15 for the essay section. I have heard that colleges do not focus too much on SAT scores for transfer students, but I don’t feel too confident about my essay score. Please share your thoughts on this. Thank you!

P.S. These are some colleges I am considering to apply to:

Brown University
Cornell University
USC
University of NC Chapel Hill
UM Ann Arbor