Should I Submit SAT Score?

If I apply it will be ED1
My GPA is top 1% of large high school. Test scores are just average for Vanderbilt:
2190 (770 math, 780 writing, 640 cr)
I am concerned my reading score of 640 is low, and admissions do not seem to place as much weight on the writing section which I scored a 780.
I scored a 33 on the ACT.

Do you think I should submit the ACT only?

ACT is far stronger. I wouldn’t cloud the information with that poor CR score if it were me, even though your 770 math score is impressive. Unless others disagree, I would just send the ACT (unless your ACT reading score is ~31 or less in which case the SAT is about equivalent anyway).

Yeah just ACT.