Great set up there but were it me I would have put all of that on the bottom shelf and just run the air through filters standing up on the sides to the top. Then put my tanks and guns being filled on top. You always want your filters and tanks above your compressor to help keep the moisture out of them. Safety wise it would be good to have the weight on the bottom also so it doesn't get tipped over so easy when moving it around.
I had thought about putting the filter system above the compressor but the reason I chose to put the compressor on high ground was to make it easier for the moisture to make it's way out of the compressor and into the filtration system. My thinking was if moisture congregates in the compressor there's bound to be corrosion or other problems in the check valves and hose fittings down the road. That is what the purge valves are all about to purge the water from the system. I purge, for a couple of seconds, every five minutes or so when the compressor is in use and change out the YH filter every twenty. I set them aside to dry and use them over again. Because of this my Gold filter cartridge has lasted a full year. My compressor is two years old now and has about 25 hours on it. I just recently cleaned the check valve out although I have replaced the o-ring on it twice thus far.
From all I have read and the diagrams I have seen compressor filters should be installed above the compressor to keep the water that coalesces in the lines from reaching them otherwise they will be saturated and ruined and pass the water on to your tanks. That is also the reason they are oriented vertically and not horizontally. The filters are not made to collect that much moisture.
If you have too much water getting to your filters a separate water separator should take care of that.
