I think that the Obama administration knew that the protests and the attack was coming and came up with the video narrative ahead of time.
If my memory serves me right, the attacks against US consulates orchestrated with the video meme, started the day before the Benghazi attack ? But DC could have also just jumped onto the video bandwagon, or the attackers wanted DC to jump onto that bandwagon.
Our leaders are being played like clowns and thousands of Americans will die because of their ineptitude. The only rough spot in your theory, is why would Al Qeada align with the US after Osama Bin Laden was killed by Obama ? From my point of view, he either was already dead or was going to die with a terminal illness (on his death bed). So they decided to use Bin Ladens death as part of the deal with the devil. Obama would get his main campaign bullet point, he killed Osama, while Al Qeada would get Libya and eventually Syria. Same basic deal was made with the Muslim Brotherhood with respect to Egypt. So who is the devil in this deal ? Obama or Islamic Terrorists ?
They started the same day but early in the morning. The Benghazi attack was in the evening.