On August 26, 2016 at 02:19, Ernie Gilman said...
Use commercial equipment. Change to 70 volt. If you can't handle it, find a commercial pro in your area.
I don't think that replacing everything is warranted here. In many respects this is a livingroom environment, he just wants a little more control.
When starting from scratch, 70V would be the way to go but, I don't see any compelling reason for pulling all of the speakers and rewiring the dining room.
If he outgrows the system, I'm sure that he'll be back and we can have the processor and 70V discussion again. Who knows what the options will be then.