I think the QS8s would still be the way to go. For movies in a large room, directionals *can* work well if you can get them far enough away from the listening position that you can get some reflected sound as well, but I don't think there would be many situations where they would sound *better* than the QS8s.
In other words, I don't think you *need* directionals for a large room, just that you can get away with them and give up less relative to something like QS8s.
Put some more soft stuff in the room. Failing that, get a couple of big dogs
