Most full or long timers use cellular based internet. Its much cheaper and far faster than any sat based wifi. Depending on what tou like to watch, will probably influence your TV choice.
Only guessing, but I would guess it would help a little, especially if there was something to hold it off the roof a little so there's some air under it. I would suggest exterior 90% snapon shade screens to stop the heat before it gets to the glass.
