Assist with B850M Mobo

Hey guys,

Been a minute since I did a build, went with Artic iii 420 AIO. I’m thinking to go individual cable route, but I am also running 3 ThermalTake 140MM SWA fans on the radiator.

Can anyone tell me if I am supposed to hook up the fans to the AIO, and if I went individual cable route will I have room on my mobo or is it better to go all in one cable from AIO over individual cables.