The pic of your setup shows comprimises must be made in a living situation. Yes, ideally, we would all have a replica of the dolby setup parameters.... but this is often not only impractical, but would deter from more important things--like functionality and enjoyability of the space.
Please remember, there are a lot of very talented and intelligent people here. Anyone can read the "rules" of audio setup online. Many here have spent a lot of time employing real world testing in their rooms with the gear they have. I would take their advice and personal experience as being as, if not more, valuable than any generalized rule published by Dolby etc.
If you have been around audio for 20 yrs, you can appreciate that the theory of audio reproduction, including Dolby parameters, is ever evolving with the current tech and enthusiast\client\industry feedback.
Once you add in the science of acoustics in individual rooms, it is apparent that all encompassing "rules" aren't applicable to every installation anyway. They are guidelines.
