Rural internet will always have it’s issues, streaming on multiple devices at once could be an issue. SpaceX Starlink has closed its open beta signup, but I would keep an eye out for when it launches, equipment costs roughly $550.00.
Another option could be to purchase a T-Mobile LTE Gateway and a T-Mobile data plan that will offer 100GB of data a month. With any of these options you can utilize Eero mesh system to blanket your household in Wi-Fi.
Hope that helps, if you have any other questions do not hesitate to reply!