SHOULD I ED?? (low gpa, mid/good ecs?)

Should I ED Northwestern? Northwestern is genuinely my DREAM SCHOOL but I'm not sure if I should ED - do I have a better chance ED or RD?
- ED is 20% instead of 8%, but are those just athletes & legacy? is the ED % really 20?

- social science major

PROS:
- nonprofit org w 200+ chapters globally (not even sure if this is a pro atp)
- multiple internships (paid)
- i feel like my essays are pretty good

CONS:
- low gpa - 3.8uw/4.19w --> if i wait till RD, my gpa will go up bc of senior year grades (4.26)
- low SAT 1460 (took it in oct. so TBD)

genuinely not sure if I have a better chance ED or RD

I've been back and forth and I'm just looking for some advice!!