Seems to me it would be a whole lot easier just to plug an HD/Blu-Ray player into the TV and skip the hassle of running wires and/or relying on a Wi-Fi susceptible to RFI, but that's just me.Exactly why gigabit "LAN" is so important streaming movies and videos from the PC across the LAN is the rural way! Buy used Blu-Rays and TV shows on Blu-Ray, and record shows from the C-Band and archive all this media to PleX. Now you have your own NetFlix in your house. But you could have more 4K content (UHD Blu-Ray, NASA UHD ect), pretty easily.
I'm building my library now, so once I get my dark sky site, I will be ready.