I ran my Majik with Ninkas for a while before adding a pair of LK85s, and it rocked. I was really worried and it was never a problem. My room is 24+ by 12 by 9, with an open kithen at one end and sunroom at the other, and I was always afraid the neighbors would lynch me.
The Katans should be no sweat.
The Katans should be no sweat.