If I were you, I would do a 7cf chest freezer. It will cost less than 2 mini fridges, use a ton less energy than two mini fridges, and can hold 5 kegs if you build a large collar, 4 without.
If you are fashion conscious like the guy above me, get a black one and drill two towers through the lid. Would look better than two mini-fridges IMO.
Also, just build the collar outside your apartment if you want one. Just need a drill, I had home depot cut all the pieces of wood for me in store.