Our Grown up room

Our "formal" living room is anything but formal and that's fine by me. I'm starting the process of trying to make it even more casual, casual but elegant. I want a room where you want to put your feet up and have a drink (or 2), read a book, but a room that is elegant enough to entertain in. I'm hoping I can pull it off. I have a vision of the kind of room I want. Floor to ceiling book shelves, a flat screen TV on the wall, surrounded by shelves that are filled with glasses, plates, and barware on both sides. Also a buffet/bar underneath with all the fixings to mix a perfect drink or chill a perfect glass of wine. I guess I need to get started on achieving this look!