The room is slightly L shaped. One leg of the L is now filled with a big lounging around on L shaped sofa (which we were initially concerned would be too huge but now love…) and opposite it is the long wall of the L, 4.5m away. So it’s a pretty large otherwise blank wall.
Existing wall mounted telly has a fat plastic surround (just measured it, the screen is actually a 40, the same wife who is now hankering for the 60 prevented me from buying the 46 at the time) and is pretty thick – this coupled with the cheap mount puts the screen about 6-8″ into the room.
Really, the wall is perfect for it, and as thin as they are now (and with an appropriately slimline mount) I think 60 will be ace.
As for cables, they are already hidden in the wall. Sawed out a piece of plasterboard to hide the wires behind. Saw cuts at an angle not perpendicular, it was un piece de gateau to put the piece back and it’s surprisingly undetectable.