Thanks for your info. In fact I had bought one from KL, but it somtimes stops (out of order) even for new battery. May be I will buy a new one at Tuen Mun.
I did not arrange cabling for rear speaker. Thus, the cables will run around the whole windows curtain (and use white cover). Hope it will not affect much of the outlook.
I initially think wireless speakers. But it seems no much choices and also the wireless module is not worth (KEF $3xxx)...
Just for your interest, according to other CHINGs' posts in this forum, Mirage will give much better surround sound if you put it "up side down at >1.8m than put it <1.8m in normal position.
If you are going to get Mirage, try and see if they are difference.
(I understand putting it on stand, the sofa may better hide the speakers' cable.)