That's a tiny room, probably too small even for the Bose to do their thing. Ideally, any speaker with rear facing drivers like the Bose, and this goes for other types like planars and dipoles/open baffle, need to be far enough away from the back wall so that there is enough delay in the rearward radiated sound that your brain doesn't incorporate it into the direct, forward sound. Not enough delay and you just hear it all smeared together, but enough delay and you get the ambiance without smearing the direct sound. I think your room is small enough to rule out such devices. In my setup like this, the speakers are almost 4' out.
Since what you hear is the sum of direct sound from the speakers and indirect sound bouncing around the room, compounded by your small room size, it means that you will be hearing a lot of "room" in the sound. You'll should plan on treatments (either through strategic decor or dedicated treatments like bass traps or absorption panels). I've heard some pretty small rooms that easily conveyed a large acoustic space, but it doesn't just happen by luck.
You should listen to speakers that perform well in a near-field setup, because that's what you're essentially going to have in your small room. Something with very uniform off axis response will help matters. Another approach would be something with more constricted directivity to help you manage early reflections, allow placement closer to walls, and thus help maximize your very limited available floor space.
I would still urge you to get Toole's book to get a handle on all this. I'm just the messenger and prone to errors 'cause I only post while drunk. The book will help you decide what sort of speakers make sense for your use, help you cut through the crap in the audio marketplace, and probably ultimately save you time and money.
That being said, I can't help but imagine a nice 2.1 system using KEF mains in your future. Maybe something off the beaten path like Pi Threes, which work pretty well in smaller rooms with low cielings, and scale like crazy (big music sounds BIG).