This is the result of adding the Podiums to the speakers, the Nobsound to the subs, getting the room modes as mitigated as possible. I had to get the crossover a little lower and increase the volume on the subs, which increased the energy in the room thus the decay has increased as well but still under/near-lower audible range.
No room treatment at all so far.
Here is the SPL before and after. I still need to tame a little the 200Hz+ by selecting different tubes, and adding a little more energy below 200Hz.
Although I do not like to add my opinion, but it is my room, system and ears I am pretty impressed with I was able to achieve; especially if I consider that the house is made of wood sticks, plaster walls, suspended wood floors and vaulted wood ceilings. In other words a magnificent resonator :)