Congrats on a great looking room and all the DIY work.
Love the look of your speakers although I've not heard that speaker line.
Like you I too have done a lot of DIY work, specifically for acoustical room treatments. Have you measured your room to see its Freq and time dimension specs? If you want to try your hand at diffusion to augment your absorbers, then send me a PM and I can send you a write-up on building 2D Skyline diffusers and a 1D...