Ok
If I understand you correctly, each row should drain directly into the sump, which sounds rather confusing for the return, I can't keep adding pumps to my design, it is already costly in power as is :X....I'd need you to make a diagram for me to full understand....
The reason I want the fuge first is only because I want it to be as large as it can be and this means the first compartment within the sump, the skimmer is where it is because I want it to be in a compartment where the water level will never drop, it is unlikely going to be on a stand (that's just in the pic confusing sorry) as the compartments depth will be the skimmers operation depth.