I’m applying to Columbia too! Not ED, but sometime soon. I’d say your chances are about as good as they could be. Meaning, it’s still a reach, but I don’t see any area where your application is lacking. One thing that does stick out to me is that I would expect you to want to pursue a hard science based on your ECs, but if you’re able to connect that to your intended major in your essay, that could make more sense. I’m curious, though - you retook the SAT with a 2300? 
Would you mind taking a look at my thread as well? We have very different interests but I’m also applying to Columbia.
http://talk.collegeconfidential.com/what-my-chances/1830636-180-days-to-go-so-help-me-stay-sane-by-predicting-my-chances.html