Your transcript is obviously strong. (Pay no attention to gym grades. The colleges don’t.)
Your SAT math score is strong, but your CR is unexceptional ( and lowish for NU). Your subject test scores are competitive, no more, no less.
Your ECs are also okay, but unexceptional for top schools.
No point in getting “chanced” by outsiders. The only assessment that matters is the AdComm’s.
Good luck! NU is a fabulous school!