To get three 2.5-3 a light with gavitas think 25 sq ft per light. No isles, tables on rollers that close up covering a rectangular area 1 ft surrounded by walls. Think of it like this. An old school digital ballast hood setup covers a 4x4 area 16 sq ft. My 14 lighter covered 224 sq ft. I can illuminate the same foot print now using 9 gavitas and you could pull 28 for 9 Gavita lights hitting 3 a light. Just like I would pull 28 on my 14 lighter hitting 2 a light.