@jeff prince all very helpful. As it turns out I have used @EAlexanders company before, for some external work. Which I thought was great, seeing as how I needed a city block. Inside studios and theaters there is just all sorts of weirdness, like rooms not being square and time consuming things to figure out, like the rake of an audience floor. I too, did find that dealing with the CAD file from the scan weighed down my file a lot, but it might be worth it to have the closest thing to being there.