Power Windows and Central Locking Harness under Development

I am at the stage of my build where I have to repair or replace wiring on the Red 5.0L Calais . I have decided to start with the power window, mirror and central locking harness that is essential an add-on harness from factory. I have original door switches and the center master switch, however I never liked the giant black switch on the lower dash panel that was the rear power switch (child lock) and I want illumination on the switches, courtesy/puddle lights in the doors and other modern accessories. Currently, I am planning:

• To have a more modern master switch like a VE commodore everything is in the one switch (windows, child lock, central locking and mirrors); and

• mulitple 5V power rails to power the led projection puddle lights, USB chargers (installing wireless charging pads where the ash trays were in the rear).

Depending, if i redesign the door cards have I may add other things. If you have any ideas please reach out.