The networking function isn't different between the professional version and the home version but the spherical projection is a feature of the professional version. NVIDIA supports warp and blending which, however, might also work for the standard version. Perhaps also you would like to consider to move to a single computer instead and save on license cost? We are currently evaluating X-Plane Beta on a single computer with an NVIDIA Geforce GTX 1080 and five 55" external monitors in an Airbus A300 commercial cockpit and a separate networked computer with three monitors for the instruments (using Panelbuilder).