Very nice writeup!
The plate you made for the aux. box is very cool.
Wayne and I did mine a little different as far as the location of the box.
Auxiliary Fusebox & Twin 12v Outlets/FJ Cruiser - Welcome To YotaTech's Wiki
That Blue Sea box is a very popular unit that I have seen used in many a Toyota aux. fusebox installation.
If I add another box to the inside one day, I will have to try your way with the template, that is very slick.