Very unfortunate.
Sure, it's a class C, but WMCU's signal is located very much on the southern edge of the market, covering Everglades and ocean far more than anything else. The human population that the signal covers well is largely "hillbilly"-types and Cuban immigrants, though, making classical a very strange choice. Although there are potential listeners on the beaches and in Hollywood, Davie, Pembroke, Aventura, and so on, most of the likely audience for classical is in the northern part of the metro, outside of WMCU's city-grade. (But, again, it's a class C, so...)
My guess: "classical" will be a short-lived, "quell the upset," transitional format; the audience under the signal is probably a better target for the standard-fare, Minnesota-socialist brainwashing and propaganda than classical music.