Slab cutting / wastage calculator drawing software

I would like this software to be developed for Windows. I am basically doing business in stone. I buy granite slabs and get it Cut into sizes as per customer . My basic requirement of the software is as follows . I would be bulk uploading the sizes I need to cut via an excel sheet into the software with the no of sizes and no of pcs in a standard format . I would be mentioning the size of the big slabs available in my stock .( it can be one size colour wise or it can be different sizes colour wise ) The software needs to determine how is the best way to cut the slab into my required sizes leaving out minimum wastage . ( inputs like I want the cut from the edge .. or leave some distance from the original edge and start cutting ) and draw the image on how cut out pcs will happen on the slab ( image can be exported in pdf / jpeg/ dwg).. telling me how finally how much is my wastage and the no of slabs for the full order .. The software needs to be proprietary and cannot be sold to any else .