That's a great way to do your wiring prep. I really can't 'read' it, but I do hope that you incorporated relays for the headlights, horn and fan plus a master battery shut off

After one traumatic wiring experience on a car I ended up with a 'kit'. S-u-u-u-re it was. Probably fine if I had all GM components. I still ended up making many mods and probably spent a weeks worth of time doing the paper work. But with that said, it was still much easier then another DIY wire job.