>I could probably help with this but would need some kind of directions
>as to how to model stuff sothey fit in the editor

Roads, houses big obstacles must be max 10x10x10 units.
Small things (decoration) like a tires, parking hours, traffic marks  2,5x2,5x10 unit max.
Was be good when is models lowpoly and textures is 256x256 pixel.
Format  is *.ac