I also have a self-study background and started at SWUFE this semester after looking into Sichuan University (too expensive, classes too crowded) and the Minorities University (a bit too…suibian, though others have positive things to say about it). I am enrolled in upper-intermediate level classes plus an HSK 6 prep class and am quite satisfied with the experience. My reading vocab has increased about 20% in the two months. I would definitely recommend visiting each school and sitting in on a class or two before deciding where you want to go.