I'll put it this way, it could be possible. However, the electrician starts on Monday and the interior plastering is scheduled for 09/20, so I would only have 1.5 weeks left and I would still have to get all the material and then install it. And since I also have day shifts from 7 am to 4 pm next week, it’s really going to be tight.
Regarding the TV sockets, we'll stick to the standard now, so one simple socket in each room except in the living room, where there will be 2 connections. In all rooms with sloping ceilings, the TV will probably always be in the same place anyway.
And if I’m not mistaken, modern receivers don’t do this automatically, meaning converting from 1 connection to 2? I’m under the impression that my TV only had one cable connected and I was still able to watch something and record something else at the same time.