Speaker stand won't work really, because the idea behind a bi/dipole is that you can bounce the sound off both side walls.
The real issue is that you sit against the wall, sort of defeating the purpose of bi/dipole surrounds, because if you mount them along side the listening position, they are too close to the back wall to give you any reflections. In which case, I would say you might be better off with them mounted slightly in front of you - though not ideal. You could also mount them above your couch one the back wall, toward either side of the couch so that they fire out into the room and still give you a bit of a null at the listening position.
I like Mordaunt Short speakers.