The Confederate Navy would be mostly motly, if one has a book on potential Confederate warships then they would most likely have those that they ordered abroad. With the exception of those that were taken over by the various governments - what the Confederates end up is entirely based on when they achieve their independence.
For the most part, given the economics of the Confederacy, I wouldn't think you would see any particularly modern warships until near the turn of the century. Take the US Navy of OTL and just slow it down some more. You shouldn't except the CS Navy to be anything more than a brown water defense fleet. These guys aren't going to be taking on the Spanish in the 1870s yet, let alone the 1880s.
Also one should think about the possibility that just as Britain had a naval arms race with Germany, the same is likely between the Confederacy and the United States, depending on how relations go.