¿Filling out and placing the rest of my bulkhead connectors?

I took a few days this week and finished putting wires in locations I think they should go on my bulkhead connectors (1x29pin & 1x47pin). I'm not exactly sure what circuits I should use to fill up the rest of the pins, or if I have placed the circuits badly with respect to each other on each connector. I have tried to make the 29pin the high-current and 47pin the low-current. FYI, this is going into a van so many of the wires (including battery, throttle pedal, and fuel pump) don't need to go through the firewall.

If you guys have a few moments to critique, please let me know your thoughts regarding circuit placement and those spare pins! Thanks in advance.