Water Cooling Design - Second Option Design

after viewing a video about reverse flow from LethalHammer ( Enclosed Below ) on YouTube, i've decided to atleast try a second option for the water flow loop, which is supposed to lower the tempratures of the overall system
for the basic physics reason of heat going upwards, therefor the flow that matches that should produce lower tempratures.

now, since im doing a single loop, it might not effect that well, but the new flow im thinking of is : Pump >> GPU2 >> GPU1 >> RAD(140) >> CPU RAD(360) >> Reservoir >> Pump

Schematics :
Click image for larger version. 

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LethalHammer's Reverse Loop design :



will appreciate any opinion.

SECTORIX.