Do some 3D Modelling

We make a line of LED horticultural lighting, and would like to have some 3d model grow room designs to represent to our customers. The primary goal is to show that the lights effectively cover a 4x4 or 5x5 grow space, so if a customer has a room 12 feet wide and 20 feet long, then they could run 2 long (4 foot x 16 foot) tables down the room, with 1foot spacing between the tables, 18 inches to the walls, and 2 feet from the ends of the tables to the walls. This means there are two 4x16 foot tables in a room that we would put 4 lights over each. Over the tables, with the four light over each (8 lights total, spaced evenly over each 4x4 grow space) , the lights would hang about 6 feet over each table, and there would be a graphic representation of the light dispersion, similar to the file that I have enclosed below. We would prefer that the colors are different though, I attached a purple fade image that I think looks good. I enclosed also an image of our light, that I would like to be used for the light source, to show that the grow room has our lights in it. Can you make a sample of this and show it to me? If you can make images with enough detail, we can compensate you for more jobs later.