Just took a second look at your pictures and it just dawned on me....if those are 4" delta blocks, and they are 4 rows of 4, you have an area of about 2'x2'. Maybe the form should ask, "what size is the actual grow area?" rather then size of grow room.

It wouldn't hurt to mention size of T5s as in 2' or 4', wattage and degrees Kelvin.