As someone who has watched a ton of CJ play here in Portland I can tell you he will have periods where he isn’t making shots. And his lack of defense makes him a bit of a liability when he isn’t hitting.
It’s why he was never even an all star snub despite his gaudy ppg. In the right system he can be great but if he is the second option, you better have an option 2A. I think your team could easily say he would be option 3 at best with Zion and BI. You can win a lot with CJ as a third option