May need to think about a second loop or you will sacrifice temps on the CPU ......
Question is are the thermal gains worth it ..... depending on the bench I would say possibly .. but a second loop no sacrifice would be required... just like everything it is a matter of economics .... and obviously from the picture the outside ambient will be a large factor in this as well .......
Good luck .... if you try it I would be intrested to see the before and after temps with outdoor ambient being static if possible ..... It would shed some light on how effective these quad rads are ....