FWIW, I'm running the 1 piece Linbrook Systems full range speaker in a room 13x19x9 and its more than enuf for my room. It also produces a large and deep image at much lower volume than my other dynamic speakers. With a room of your dimensions, becuse of the inherrent bass problems due to its dimensions, I would think about the Linbrook Monitor, the exact opposite of what you have in mind. Add a sub later if you must, you would have a lot more flexibility with speaker placement with that system.
