Okay I see. Sounds good.
Here's my version of your photo.
I have a couple of minor ones. We had outlets on the bumper:
The tank was in the boot:
Didn't have many pictures for some reason. Had the pump in the spare wheel well and the controller just behind the tank so was right there as you opened the boot. We just kept the space saver strapped beside the tank.
Worked absolutely fine and not a single leak. Had a false floor along the whole stretch including where the rear sests were. We used s crap hose reel though just to start. Never once let us down or leaked though!