<p>Thanks for the advice! 
I’m fairly certain I’d take Yale over Columbia if they accepted me…so at the moment I’m leaning toward Yale. Problem is, if I do EA for Yale, I can’t do EA for any of my safety schools like University of Michigan - and I don’t want to be TOO certain U of M will take me RD. In the past I’ve seen them reject some great apps. Ugh, so much stress :/</p>