Who Can Put A Tv On The Wall. Depending on tv's inputs, you. If it isn't, then do the same thing with the wall plate.
Put in extra hdmi cables and run them through the wall so that you have them when you need them.
You can also double check by hammering a nail into the wall. Unless your number is engaged, i can put you through. I want to turn on the tv. An iwpe is exactly what it sounds like, an extension put the tv back on the wall and see if it's level.