If I understand your intended setup correctly, you could put the POE filter on either the input side of the primary splitter (the most common method), or on the output leg that feeds all the TVs. The latter might prevent unlikely interference between the moca and internet. This is ok as long as the Pro is creating the moca network.
Most splitters will work fine but something between 1GHz-1.5GHz is recommended.
Correct, for the Pro to create the moca network, it will need ethernet. The Minis will then work with just coax.
Last edited by BigJimOutlaw; 07-01-2015 at 11:50 AM.