@Tommysyko If you turn your heat exchanger fans so that the wiring hangs down from the bottom instead of running out the top, you can hide the wiring and connectors behind the bumper. The instructions show mounting the fans as you have them, but most installs hide the wiring and connectors behind the bumper instead of having it draped over the heat exchanger and radiator.
As far as headlight adjustments, I’ve had no issues getting to the adjusters from the top or bottom. As you said, I use ratcheting flex head wrenches.