@RichInPitt , I was working on these 2 documents today as well. I think you should ask your question to the schools asking for the CSS profile. It’s my understanding the the profile is needed for institutional aid at those schools that ask for it. So if you are not applying for financial aid, you may not need to do it at all.
I would just confirm this with the schools wanting it just to be sure. Because some schools only give institutional aid/merit to those with need. But file the FAFSA, as that is probably mandatory to be considered for merit aid as well. Confusing, isn’t it?