As you can see in the diagram, we would like to ask someone knowledgeable on what we need to accomplish this task. All signals are coming from the Mac Mini with the exception of the Apple TV. I will say that these displays need to be independent and not mirrored. So to sum it up, we have 4 outputs required. Would this be 4 adapters? Maybe even a mirroring device? We are running a software for MAC called Pro Presenter 5. It in itself has multi-monitor support for the front projector and back projector. But getting all these devices to connect is out of our league. The Apple TV will be available to view mainly on the front projector (Which is 100' away). We also would like to get some advice on what to buy for the main LCD. Of course without spending $800 for a 27" Apple display. We appreciate any advice.