Originally Posted by 
POD
				 
			Our battery is in a different position, it's behind the panel opposite the steps, i.e. above the front of the long external locker. Yours looks like good use of otherwise dead space, also forward, low and central so a good place for the weight, but yes it needs to be well secured. Whilst you're in there, check the water tank straps are tight- I pulled them together at the top with a couple of oversized cable ties, one of them had fallen off the shoulder of the tank- definitely don't want that bouncing around.
Dust ingress we have found is not a problem, having no openings at the back, where the dust plume is when traveling, is great.
We have the original gas HWS in the left rear cupboard, I've also fitted a diesel heater above it. Hot running water is a huge luxury for camping! Odd that yours doesn't have a HWS, perhaps they down-optioned the rental unit?
The 8.5kg gas cylinder last us ages, haven't had it run out on a trip yet and I swap the semi-used one onto the BBQ bottle at home as it's no drama if I run that out.