How much are my ECs holding me back?

Hi! I’m going to be a senior next fall. I’m happy enough with my grades and test scores, but I’m afraid that I haven’t done enough clubs and am feeling a little nervous about it. I would really appreciate it if anyone could look at my list of stats and such and evaluate my chances at some colleges. Thanks!

GPA: 3.98 unweighted
ACT: 33, 34 superscore, I should also be a national merit semifinalist
Course rigor: Hardest available, all As + 1 B, 8 AP classes so far, 5 more next year, 4s and 5s on all tests so far

Extracurricular:
Teaching 5th grade math team 3 years, 12 weeks research in BME 2015, 12 weeks research Neuro 2016, Intel ISEF Finalist 2016, Varsity Track and Cross Country (state team), Spanish Club Officer, Forensics team member, 2 week immersion thing in Spain, other little stuff like NHS but not significant

Awards: Intel Finalist, Society Women Engineers Local Award, SHS, NHS, Grand Prize regional science fair

Essays: I love them so far
Rec letters: between good and really good
Ethnicity: white girl, no financial aid

Some colleges I’m wondering about:
Dartmouth, Columbia, Rice, U Chicago, Brown, Carleton, Middlebury, Emory

Thank you so much!!

I think your ECs might be holding you back just a little bit due to them being all over the place and not all that significant. However, your stats are looking great, so I think they could balance out your ECs and could possibly land you a spot in those colleges. Keep up the great work!