This proved to also be a giant PITA. A smaller fuse block with thinner power cables would have made it easier. The 1/0 gauge doesn't like to make sharp 90 degree turns. tomorrow I'll route the cables through the car (it's the easy part).
Here's the armrest and console laying on it's side. You can see all the power cables running up into it. I bundled the positive & ground 4 ga in one piece of split loom for easier routing.

And here it is assembled a little more.

It's a Stinger fused distribution block with voltage and amperage display. I like these, although they are a bit big a tacky.
I had run a fairly rigid piece of corrugated plastic tubing through the console routed to the firewall grommet. This allowed the 1/0 gauge cable to be easily routed and keeps it protected from damage.
Here it is mounted in the car. The center console comes apart very easily, only 2 screws and 2 nuts.

And here's how it looks with the seats back in.

I'll build a cover later and make a place for the Alpine bass boost knob to mount. This will allow me to continue keeping everything out of sight, but still easy to get to.
