The community could give you a "yes" or "no" answer, but the real truth is "it depends" - mostly on the shape of the data sources that you want to blend and what fields you want to blend ON.
Please post some simple sample data that looks similar to yours - you could do so in Excel, with a worksheet for each data source and a final mock-up showing what you WANT to see.
With sample data in hand, we can be a bit more prescriptive for you. Also, where does your "real" data live? In a database? (which one?) A text file? Excel?