Your last question of: Whod to say if we would be helping the right side? That question needs to be answered before we get involved deeply. To the untrained eye, there seems no question; any side that gets rid of Aasad has to be the right side especially when you take Aasad and Irani close ties.
But is it? Those who have followed this situation closely know that AQ and other Islamic extremist groups have infiltrated the opposition and have sent in fighters to over throw Aasad more secular government hoping to establish an Islamic Republic. If this is done a Syrian Islamic Republic would be far worse and a more dedicated enemy of the U.S. than Aasad every thought of being.
The fact might be that there is no right side in this affair regardless of which side uses what.