Best answer by jdag
Yes, this will work easily. You start the TV program, then group the zones. Anything that plays in the TV zone can be pushed to any other zone. I do just that.
1 thing...if your rears are going to be used almost exclusively with TV audio, then Play:5s are overkill as surrounds. If you plan to use them for music, then it is of course your call. But the Play:1s as surrounds, especially because you are going to have a Sub, likely will more than fit the bill (and save you about $600 for speakers you can add to other parts of your home).