LIAN LIUNI FAN SL-INF Reverse Blade - Infinity Mirror ARGB PC Fan - Black

Can these lian li uni sl-infinity 120 fans be used as radiator fans?

If I were to purchase two sets of these, would it be possible to use the y-splitter to power 3 front fans and 2 bottom fans with a single controller?

Can you control a cluster in software other than L Connect like Asus Armoury with the controller? Like fan speed for cpu is different than the rest?

I am buying the 140mm fans size which don't have a connector. Is the connector in this 120mm kit compatible? How can I buy it?