Looking for Disk Image Automator Actions!

Does anyone know of an Automator action, or Big Cat script, that when you right click on a mounted Disk Image, will unmount it and *delete* the original image.

Why? Well.. My download folder is huge.. and I need a faster way to look into a mounted disk image, test out whatever is in there and then delete it. If I like the application, or whatever it is, I will copy it to a more permanent location, and still need to delete the original!!!

If no such thing exists I’ll cobble one together, which should not be too hard seeing as I can start with Laine Lee’s work: Show Disk Image File of Selected Volume