Is there an Isssue to transform a static mesh into a Blueprint


I wonder if there is any performance issue when turning a static mesh into a Blueprint. I want to make objects that are placeable into the world without any behaviour whatsoever. So can I do it into a Blueprint and then composit it in the viewport of the blueprint by adding components or must I do it in the world and just copy paste these things to have better performance when executing?
What would be easier to transfer into Code though?