Not sure if that works. If he's put on the 60, he'll like get a bump on day 41 and 60. The 15 DL I'm thinking about is the 5 day injury that doesn't show a rating hit. Sometimes they'll get a ratings bump nonetheless. If you put a 40 on a 15, you're likely to get one recovery. And it may just be a full recovery with no gain.
I don't know enough about Campos to know. I just hope Pineda pans out for the next couple of years while Campos develops.