It is possible to create a map that is both shaded by the areas (choro), and also has bars centered in the areas (block map) in recent versions of SAS. The syntax is a little tricky, and it is probably best to start with a working example, and modify it to use your data. I'm not 100% sure, but I doubt Enterprize Guide has an interface for this specific capability.
The map in the bottom/left of this example might be a good/simple one to get you started on the code:
http://robslink.com/SAS/democd5/revenue_info.htm