Bad idea.
Quite aside from all other factors, there is the fact that they are on the losing side. That is not the side one wants to back. The Syrian opposition is very disunited, and so never can succeed. Not unless someone else comes in to fight the war for them, like in Libya.
Part of arming the rebels- more like invaders- is uniting them by only arming the strongest faction, AQ and starving the rest or paying them to accept AQ command.
The warmongers are working on that.
Keep an eye out for more illogical tales of chemical weapons use by the regime "on a small scale" in irrelevant battles, killing a handful of people.