Sketchup blocking sun shade diagrams solstices

I need a simple sketchup blocking model of two simple buildings on a rectangular site (no topography required), and blocking of a couple of simple neighbouring buildings. One of the buildings has a slightly irregular footprint, the others are standard rectangles. These will need solar diagrams for winter and summer solstices, 4 images for each solstice. I can provide .dwg file and google maps location. There is no rendering or materials or details required - just a simple shadow diagram for summer and winter solstice, in greyscale, as per geographic location. I would allow 3-4 hours max. Please get back to me with your estimate of time to do this and cost per hour, thanks