Eventually, you're going to want more and better amplification. I'd start with better amp or speakers. Later on, you can pick your "final" speakers for your listening room, but I'd recommend going for better power now, with the Elacs, just to illustrate the benefits of improved current delivery. If you add a decent subwoofer as well, that just might take care of things long term. You'll never get proper bass from the Elacs alone, even in your medium-sized room.
My room is about 14 x 14, opening out on two sides. You might want to look at my photos to see I've approached this kind of space, just to give you an approximate sense of scale.
My room is about 14 x 14, opening out on two sides. You might want to look at my photos to see I've approached this kind of space, just to give you an approximate sense of scale.