I'm going to mount 4 speakers on the back and side walls near the ceiling for surround sound. The wires will go through the attic above the room. The issue is how exactly to get the wire through the wall to the speaker. I'd rather not see a wire sticking out of the ceiling on the way to the speaker. Has anyone drilled through the top plate, stuck the wire into the wall cavity, then fished it out through a hole in the wallboard behind the speaker? Good idea? Too much work?