. . . . and no smoke released!
Have all the passives installed + the Voltage regulators. Gave a test-fire of the board and the switching regulator settled at 5.01v. Even got a green couple of LEDs to glow. Wow!
Tomorrow will include beefing up the traces that need so, and installing the active parts. (including the dreaded INA-220s.). Then just need to install the Arduino boot-loader into an Amtel CPU chip, solder it in, and can perhaps load the test code and see what happens.
Going to bed now, but for now am very happy.