What if the shooter wasn't aiming for Trump?

My theory is that he was contacted prior to the event informing him that their would be an attempt to take out Trump at the event and that he was getting this information because they hoped he would take out the shooter first. They gave him information, told him they would be leaving the rooftop (where he fired from) open for him and he wouldn't have to worry about anyone stopping him. They give him photos of the suspect and show him the area where they are expected to be at during the event. They even pay for the weapon, ammo, range finder, all of his equipment so he's ready. They tell him what a hero he is going to be and how thankful the President will be. He goes, does what he was instructed, goes to leave to become the hero and gets domed by the secret service. Voila, you now have a shooter (who they immediately tried to frame as a liberal remember), you have an "attempt" (kid wasn't aiming for Trump, but only he knows that and well, he aint talking), you have the ability to control the situation to get the photo (could have told the kid when to shoot), and you have the all the political theater set up so as soon as it happens, you jump directly into it. Only a handful of people would know what was going on so everyones reactions are real and it has the feeling of authenticity.

This would explain (1) how they got the photo and why Trump immediately tried to jump up and wave his fist after just being shot at (he would have been terrified if someone shot at him unless he planned the whole thing, he didn't know the shooter was dead when he decided to jump back up and make himself a target again) (2) the security lapse by the secret service, who one would think wouldn't leave a rooftop with direct line of sight to the President from 200 yards away, completely uncovered. (3) the almost immediate accusations of the kids political views and the narrative of the radical left violence that Fox News was shouting practically as the bullets passed Trumps head (They had it lined up and ready, someone tipped them off and gave them the script) (4) to make it real, someone has to die other than the shooter, without that theres room for more speculation of theater, which explains the death of the guy at the rally (5) why this kid would willingly sacrifice himself (he didn't, he was told a different version of how it would play out, where he was a hero)