Amthanh, this looks like a lovely, well thought out system and room. Tasteful, unencumbered and I'll bet sounds great! You seem to have applied creativity and sensibility in how you treated the head wall with the curtain; good job.
I'm guessing you also love the variety afforded with owning two different technologies in speakers. I find it far more stimulating than trying to settle on one technology/brand, as this can never deliver the wide variety of experiences which multiple speakers can. Whenever the experience gets a bit stale I switch out the speakers and - wala! An entirely new experience again! As one adds music to the collection it's always a fresh experience to hear it on the other speakers.
If at some point you get "itchy" to try new things, consider comparing some same brand sets of cables. You might be shocked at how much this will influence a system. I would encourage you to compare sets of different brands, not merely different lines within one brand.
Enjoy!