I used the acoustically inert batting material for the upper panels (burgundy) and used Linacoustic behind the lower panels and along the front half of the ceiling. It was the ability to use core materials that drew me to the product in the first place. A side note, I was able to get Linacoustic cheaply from the builder, and also used 2 layers behind the false screen wall, with superchunk traps in the front corners. The ceiling false soffits all are lightly filled with pink fluffy insulation for additional bass trapping, as is the riser (with registers all around).
I thought about chair railing, but if you use this, you'll need to double up on the amount of track above and below the rail. Using the flat or beveled track gave the clean look I was going for much more easily.
For outlets and lighting controls, you'll have to raise it 1" from the drywall surface, and surround each plate with a small frame of track. This is a pain in the rear, as you have to be very careful about cutting a perfect hole in the fabric after perfectly aligning the track around each switch/outlet plate. All of my outlets are in the riser, or behind the screen, with the exception of one in a side column on the right side of the room that is mounted to the column framing. I have a Lutron keypad outside the room, which can be operated via remote control, iPhone, etc. For the lights, we pretty much cut the smallest holes allowable over the sconce boxes and can lights, and used included trim pieces to cover the edges.