Size wise, those are almost the biggest Kharma's. I was surprised when I first saw how small the highend models really were.
As a former owner and current fan of those speakers I share your disappointment and agree with you that the new room is too small. If the money is there to step up to the 3.2's this should solve your problems all the way around. They are most suited to the new room, and should not give up much in the bottom end.
The 3.2's are another great product, and a good match, seems like a no-brainer.