If there is any compensation, you do understand you will need to be part 107? At that point you will be forbidden to operate over anyone not related to your activity, I.E. helpers spotters etc.
So, I'll assume this is purely recreational, and could in no way be construed as anything but by the FAA. While flying over people is not expressly forbidden, It is strongly discouraged and it is not the smartest idea, due to the fact that if your ship goes down on someones head, the media will be all over it. This is the kind of thing that the media and the nanny politicians constantly use for ammunition to attempt to regulate the cr** out of our hobby. At that point also the Feds could use the "careless and reckless" card against you, and that would be a very bad day.
So, my advice, as I have done similar things over the past few years is: Find an area to launch and land, off away from the crowds and any bystanders. This is for safety, obviously but also because you will be distracted by a million questions from onlookers if you don't. Then go up to sufficient altitude to get a perspective from an angle. You can hover and travel over buildings, and protective covers also without putting people in any jeopardy. If you have a failure, (other than a flyaway) the Mavic is most likely to go straight down into an empty space or roof, harming nothing but your own pride.