H6 flow fan selection

Hello, picking up the NZXT H6 flow RBG with the 3 pre installed fans. I was looking into more NZXT fans, including a 120mm at the back and the f280 at the bottom and use the pre installed fans on my separate AIO.

How do I manage the fans? Do I need to get multiple RGB fan controller because I will have 5 NZXT fans (3 front, 1 bottom, 1 back) Or can I run splitters off of it?

Also would it be worth it to buy the f360 and replace the AIO preinstalled fans?