Again, in this particular circumstance, where OP has already admitted to being in possession of the files, would there be any difficulty in obtaining a warrant

Again, in this particular circumstance, where OP has already admitted to being in possession of the files, would there be any difficulty in obtaining a warrant for all of his computers? I'm honestly curious as to what there would be to gain on insisting on a warrant rather than just agree to some deal and avoid criminal proceedings.