Mac mini to 4 devices

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.

 

Thank you so much. Yes, I realize my mistake now for the Apple TV.

I've also added a fourth display for our foyer LCD.

Regarding the Apple TV, is there a way to connect it to the front projector via the mini?

Meaning send the signal of the Apple TV through the Mini to the front projector?

The reason I'm asking is because HDMI will lose signal at that range.

The projector is elevated about 50 feet in the air. So what your implying is we would have to connect the Apple TV to the elevated projector for a signal override? How would that work?

We would have to manual switch from VGA/DVI to HDMI to get the Apple TV to display? That wouldn't be ideal.