One other thing to consider:
Hardware store T5's are normal output. Fishy lights are High output (T5HO). You want the T5HO for the intensity & compactness. I've only seen a couple of T5HO's at the local hardware store, but the price is double that of the usual T5's, (as much as the retrofit kits on the net.)
As a reference, T5HO's are 54W for the 4 foot lengths. NO are around 28-30W.
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.