Re: Get an nVidia shield (or your box of choice)
I made similar choices. Have 5 Samsung screens around the house. Four of them monitors connected to Raspberry Pi or Amazon Fire TV box. The single TV is not a smart TV. Just big plasma screen also connected to TiVo and Amazon Fire TV.
None of the screens are internet connected. All the screens have access to video stored on my NAS.
I record those TV shows I wish to watch and play them avoiding commercials.
I can hardly wait for firmware updates to self driving cars...