Remember if you will, that not because a room is L shaped does that mean you have to put speakers to cover each rectangle. Concentrate on the dance floor and if the music is loud enough, it will reach the other corner as a combined sound anyway. Sometimes some guests find it appealing to sit away from where the music is concentrated. Ideally the two speakers should project along the longest area with the smaller rectangular area being on that back wall.PERFECT!
I was gonna mention "Black Water" as a great stereo song.
We used to turn the balance on the car stereo all the way to one side,
and then sing the missing vocal part.
(funny, "Doobs" were usually involved in more than one way)
But it's songs like this that drive me crazy and force me to play in mono...
in SOME of the local venues that are irregularly shaped.
(L shaped rooms, more than ONE room, etc)