You can do what you want with
the demo (free) version of CC. It lets you have 20 books on your device. CC integrates well with fbreader. Don't bother with using fbreader's library features, just use it as a reader app.
Of course I wouldn't mind if you bought the full version of CC
, but I suggest you try the demo version so you are sure that it does what you want and works well on your home network.