My listening room is 15 x 25 x 7.5, and I had a Cronus Magnum II before the PrimaLuna. I loved it too, unfortunately it died within 1 month of ownership from new! (it was a left-over) I was completely bummed as the 100 watts per really drove the Lore speakers like none before! (I should have gone with the Cronus III but the PL has auto bias which is nice.
As for Stand Mounts, I have a good deal of furniture in my room and the floor standers take up a lot of space. The wife hates the whole deal but puts up with it. The R3 KEFs seemed like a good trade off and from what I can tell on You Tube, sound quite good. My budget is about $2K so they fit right in. To be honest, I'm not all that thrilled with the Tekton product. They get such rave reviews but I don't see it. They're okay, but I think I can do better.
Thanks, William