Hi all, thanks for the replies. I considered building a case as I am fairly handy and build a nice waterproofed enclosure for the electrical on our ceiling fan hung under our pergola. I used a white composite board (Kleer brand) and it is all sealed up. Considered that here, but my waterproofing concern was not on the top (or even the back even), but getting a tight enough seal on the doors (front and top) to stop rain from getting in. The other thing with a 'box' enclosure is that this is being mounted on siding (as opposed to a flat brick wall or the like). I think if I mount and articulating TV wall mount on the house (may have to get creative with getting a flat surface on the siding), run the power plug and the HDMI cable (from the cable box which will also be inside the house) through the sill above the foundation (and then caulk this opening), those 2 cables will come up to the back of the TV, and when covered, the Solaire soft cover that I found appears to be fully waterproof (and allow for the cables to stay protected as well), so that should do the trick. I think that Solaire soft cover will also be better for breath ability to release any trapped heat that may build up by sitting in the sun.
Oh, and of course, it will be plugged into a GFCI, which will either be inside the house wall or in an all weather enclosure.
Also, just have to figure out how to run the remote if the cable box is in the house, without moving the box to in front of a window. I may look into an IR repeater.
I believe that Samsung smart TVs have a PLEX app, which is great, cause then I can just wirelessly stream movies from our library stored on our Mac Mini inside and control via iPad.