I have the Sabrinas too. My room is 16’ wide, 34’ deep, 10’ tall.
I love the Sabrinas. Mine are 5’ off the front wall and 4’ off the side walls.
I’ve been really impressed with their ability to maintain linearity at loud volumes (103 dBC peaks). And they present excellent detail even at very low volumes too.
I’m driving them with an ARC REF 75SE, but have also used a pair of CJ LP275Ms.
I’m not clear on why your room would not accommodate the Yvettes. If care were given to placement, there’s really no reason it couldn’t work well. My appetite has been whet for the Sasha DAWs or the Alexia 2.
FWIW, Wilson wants a factory trained set up specialist to do the installation. I know from countless showroom demos, all the way up to the Chronosonic XVX, that the installation is not always right, and when it’s wrong, the Wilsons sound mediocre (all of them). David was a fanatic about setup.