Listen, I was in your shoes years ago and Columbia was definitely the right choice. I don't know much about Columbia's policy track, except that you are focusing on policy analysis, economic research, and work in think tanks and for the government. The Social Enterprise Administration track is actually very strong at the master's degree level, from what I've observed. We have a CUSSW intern at our agency right now who was in this track and he is getting a really solid overview of all things administrative in a nonprofit setting, from fiscal, to development, to marketing and communications, to program evaluation and policy. I'm also friendly with a bunch of people who graduated from this track and they seemed to have had the coolest jobs upon graduating, mostly in middle management in the private and nonprofit sectors. The two tracks you mentioned are indeed significantly smaller than their clinical track, but that is a good thing. You want the individualized attention at Columbia, a school so large it can be easy to get lost in the crowd.