I have 2 4K TV and am ready to upgrade to the HR54 and C61K 4K solution. I expect to have C61K on each of the 4K TV to allow 4K viewing. Since I have all 4K TVs, what are my options for placement of the HR54? Do I have to have it connected to a TV? Will I be charged for a tuner in the HR54 even if it is not connected to a TV?