Photoshop EPS creation with clipping paths

I work for a larger air conditioning manufacturer in the Marketing / technical literature department. I am currently overseeing a Webdam database that has been set up. The database has a few thousand assets stored inside. We want to covert the files, as needed, from their original file types to Photoshop EPS files with clipping paths. We do not want to use the magic wand too, but instead, to use the polygonal lasso tool to trim out the backgrounds including shadows. We do not want to downsize the files from their original size. The final Photoshop EPS files with the clipping paths must also be saved with CMYK color setting and 300 dpi. I have attached a few files showing how the file progressed.