That is the path I ended up taking. I ran a takeoff report including the areas of interest, and then again without, deducting the quantities to get the remaining totals. However, it doesn't seem like it would be unreasonable to show both in the same report. The quantities included in the AOI's and then the site improvements in all other areas. Otherwise, I have to define every site improvement within some Area of Interest in order to show all quantities in one report. This doesn't always make sense for me to do.