Got the harness put back in the sub panel and started worked out the final bus locations. Really didn't like that the GEA was behind the subpanel before so rearranged things a bit and got it forward of the subpanel. Finalized the fuse holes locations and primary bus power routing. Just a lot of staring at it and moving things around. I think I finally got it.
Started drilling some holes in the subpanel for LRU locations. Going to need to reroute some of the wiring but thankfully I ran everything quite a bit long. Should be able to salvage wires, but at some point I will probably rerun all the wires to try to get them pretty.
3/31: just a lot more tinkering. Running one wire at a time at this point. Finalizing LRU locations.