Decided to do just one of the of 48" CFL / MH combo fixture in the center and then run banks of T5's on either side of it.
Sump design is finished. I have a limited amount of vertical room but gobs of horizontal space so this one is set-up for lots of cross flow. This set-up is whisper quiet when dialed in just right with flow rates on the two feeds from the the overflow boxes. The up flow design ensures good and full flow thru the filter and bio media with minimum amount of water agitation to help maintain Co2 levels for the Ph and plant health. It will also have a sealed top to trap and concentrate any Co2 that does out gas in the sump.