Isometric 3D Map of Buildings and Roads

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This customer received 4 vector designs from 2 designers. They chose this vector design from hunGarry as the winning design.
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I need a isometric map of houses, garages and other buildings, roads and the correct spacing inbetween. I have knowledge of how to do it, but I do not have the time. See attached screenshots from tutorial site and screenshot from my personal copy of Illustrator. Vectors are shaped to 1:1000 in metric scale. I would like the isometric map also to be scaled in x, y and z to 1:1000 metric.
Compressed .svg file attached. Screenshots for maps should be taken from public available web map services on adresses Austhagen, Jærveien, Kvernelandsvegen in Sandnes in Norway.
See attached screenshots from Adobe Illustrator to understand limits of isometric map illustration.
Updates
Project Deadline Extended
Added Friday, July 04, 2014
Extended Deadline.
Added Friday, July 04, 2014