I know this isn't what you're wanting, but I'm at the same stage you are-waiting on parts (come on Monday!!!), and this is my first build using corsair fans so I can't give you a definitive yes or no you can or can't do that. I'd suggest doing the same thing I have, I've been reading Zotty's Corsair RGB Hardware and ICUE Ecosystem thread here: https://forum.corsair.com/v3/showthread.php?t=173880 at least until someone knowledgeable chimes in anyway.
From what I can tell you're not supposed to mix fans with different led setups on the same controller. Please don't take this as gospel, that's just my interpretation. Anyway, just trying to be helpful, please let me know if that isn't the case. It'd be really helpful for me if it wasn't.
For a bit of background, I'm setting up a 570X with 4 SP120 RGB Pro fans to replace the regular SP120 RGBs that come preinstalled and was trying to find out if I could do the same thing with QLs for the exhaust fans on top. I'll probably end up getting QLs for the whole build, they just look killer even to an old fart like me.
Edit: If you go down to #5 in the "Some Basic Questions Answered" section in that thread I linked it says:
You can NOT mix fan types on the Corsair RGB Fan LED Hub.