Five screens

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I am planning an upgrade with P3D and welcomes your suggestions for optimal setup.
I uses five flat screens for the cockpit outside visualization.
Some say that the visualization should be spilt over two PCs. Some say that I should run all screens on one PC.

Your suggestions:
1:Hardware setup
2:What programs could be useful.

If using multiple PCs, shall there be P3D in all the PCs
What P3D license is optimal.

Thanks.

http://www.mycockpit.org/forums/attachment.php?attachmentid=11814&stc=1

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Is it possible to run five screens on one PC with P3D for the cockpit outside visualization. Or is the upper limit 4 screens ???