I’ve bought all my current Canton speakers to best fit my smaller rooms along with the idea that they might end up in a tiny house one day.
There is no way I’d be looking at the Ref 3.2’s for that kind of space. Honestly a 3.1 or 3.2 setup is where I’d be looking the hardest.
From personal experience in a 12’Wx24’Lx16’H room the Canton 9.2’s plus two HSU ULS-15 subs work great for me with basically a 10’ by 10’ equilateral listening setup.
The above gear will eat up about $3200 and you’ll definitely want an AVR with a very healthy amp/power supply to drive them, especially with a center channel speaker and most definitely if adding surround speakers on that same power supply. You might want to consider budgeting for an outboard amp of some sort if not initially, then down the road.
You could save $800 from the above setup by going with two RSL Speedwoofer10’s and I’d personally have no issue setting up my Canton Vento 876 towers, a center channel and two RSL Speedwoofers in the space you’ve designated for your audio/video as I use them with a single 10” sub for movies/music and I’d only add a second sub if I was looking at a more music biased setup.
Another benefit of the Vento 876’s, it needs far less distance from the boundaries vs the other larger Canton towers and they would also not visually or actively overwhelm the space you have to work with while offering excellent sound quality.
Some different tracks on the 876.2’s as I don’t know what music you prefer but gives you an idea what you could expect.
https://youtu.be/lJN_SCDc8jQ
https://youtu.be/rQ_aZcp1u28
https://youtu.be/rQ_aZcp1u28