Ok, some points - and don't hate me if it seems like I'm muddying the waters
First of all, 24 sq m is way smaller, and decent standmounts should be enough.
Secondly, I haven't auditioned that many standmounters alongside the focals, when I went, I was looking for a specific type of sound, and the focals+arcam were it.
Now. Some are saying that the focals can sound harsh with brighter sounding stuff, like some of the Naims. Your CA is also considered a bit bright. Arcam is warmer sounding. The Aria 906 might be perfect for you, but you might just as well dislike them, no way to tell without auditioning. Only way to tell would be to take the plunge, keeping in mind the fact that you might need to change amplification at a later date - think arcam a19 or croft phono integrated. As for the Focal's bass performance, it's very good for their size and pricerange, but might seem lighter compared to BW (because BW have an artificial upperbass bump to make small speakers sound bigger). It's not the absolute tightest bass, but it's good.
Now. If your amplification is on the brighter side, I strongly suggest you check out XTZ 99.26 mk II - since you can send these back if you don't like them - but I think they are wonderful speakers, and they have adjustable treble!!! Another suggestion would be Kef R300 if they fit your budget - these are pretty warm speakers iirc, and have nice tight bass. These, however, are not as open sounding as the Focals. XTZ are also darker than Focals, but have awesome ribbon tweeter, and they vanish with good amplification.
Again, if you're willing to consider changing amplification at a later date, the 906 are very very good and lovely speakers, and the match with your amps might be perfect for you. The order I would do it in though would be checking XTZ first, then try to audition the kefs and, if that's impossible, take the plunge on the Focals.