That is a pretty large room. You'd be asking an awful lot of a bookshelf speaker to fill it. I don't think I'd even try to get the little M2i to try it. I have a pair of M2i's and love them, but it's not fair to think they'd fill a room that large.

I suggest you get a pair or towers (M60ti from the factory outlet) and enjoy. If you really want more depth, save some more coin, and get a sub down the road.

Bottom line...that room is too big for a small bookshelf speaker.