Data recovery please help?

What seemed to be a minor Trojan that got into my system deleted the entire os. I absolutely need the files and programs from the hard drive (I am a software developer, potentially millions of dollars of unpublished software on that hard drive, it failed during a backup, my luck). So I thought of getting an ssd, installing windows on it, and using my previous drive as a slave drive. Could I recover my software and programs like that? What about my websites or projects for clients? My other option Is to pay $2500 to drive savers. Does anyone know a good alternative to drivesavers?