Living audio set-up

Lots of Glass: Side Walls?

Full Height Draperies or THICK Textured Fabric Vertical Blinds.

Not long runs, several sections so you can close some sections totally, some partially, leave some open.

The Vertical Blinds, you tilt the blinds so the sound absorbing, non-reflecting strips face the speakers, thus allowing light and vision at the reverse angle. Heavy, thus buy good quality tracks.

Now: the other side? Even if no windows, think thru if you need opposing treatment so the reflections/lack of reflections are equal.

Hint: you can wait, buy big heavy canvas drop cloths, use them as temp shields to decide what you want to do for real, i.e. spend real money on.

Pretty good size room & hard.IMO a good floorstanding 3 way is the way to go here + they would be a bit more efficient,making better use of power.In your room I would absolutely not get anything that has a tendency to be brighter sounding like Triangle or pretty much anything with all metal drivers..Even something like Dynaudio might tend towards brightness in your room..
 My $ would probably go for something from Sonus Faber or in your room the Wharfedale Linton & the Harbeth Compact 7ES-3/ XD might be good options...

What about the Sonus Faber Sonetto III?

Or even the Sonetto II?

^^^ IMO they might come off as a bit bass shy,smallish cabinet & drivers..I heard the Lumina V recently driven by a Creek EVO50 & I have to say they have the wonderful,rich yet detailed sound SF has always had a reputation for...