If I’m wiring a custom & im not putting in wall bracket then I eaither do 5’ or 6’ off the ground. Same stud bay as power & I make sure there is no blocks below. I usually use a 2 gang low volt ring behind TV & a single gang down low. That way I or home owner or future AV tech can easily fish wires down for local BluRay, Xbox etc. I usually use one of $naps surge protected plugs so I don’t use combo boxes or add on low volt rings.
As far as wire goes I run coax & 2 cat5s minimum.
Knowing that Gold went up a few K makes me think "well now I have to do a better job on selling more equipment".
