Wow. I guess UChicago’s test optional policy really works for those who have a story to tell, just not a good SAT. I was skeptical about them doing it but hey, congrats!
For Stanford. They are not test optional. It may mean that they could use your scores as a filter before even looking at your application holistically. My gut tells me that admits with low scores are usually athletes but I its just a guess. I have a feeling that if you get past the scores “filter” at the outset you would get in, given the quality of your interview… if not, then you will be rejected. I don’t see a waitlist happening. But its only 10ish more days you can prove me wrong. 
My only advice is log off from CC, now that you have UChicago in the bag. Sit back and relax. Dont even bother thinking of Stanford until you get their admit/reject response.