Thats not too large of a room. I always prefer going up the to the next range but smaller, if that makes sense.
For instance, if the Special 40 fills the room / pressurizes the room to satisfying levels, I’d take the Special 40 over the Evoke 50 simply because the Special 40 has a esotar tweeter vs esotec.
Price is another factor. It looks like Evoke 50’s are $5000. I’d pick up some Special 40’s usedfor $2200 and spend another $2k ona pair of Rythmiks...