I would like 2 light bars for added blue POP.I would not try to add to the echo tech mount. You could build something custom. IMHO, its not clear what you mean by the living room is a fish store. Or - perhaps just use the lights you have - because they should be adequate?
Why not add another echo tech light - and set 2 of them on more blue settings? Or - like I said you can build a custom canopy of some kind. With My radions I get plenty of 'blue pop'. But - its all personal preferenceI would like 2 light bars for added blue POP.
I cannot hang anything from the ceiling