multiple loops

[BrakinDeep]

I am looking to changing cases. Primarily to get everything internal and with the new room I'll have, I'm curious if changing my loop config would be beneficial. The new case will provide a lot more room and allow dual loops but would it really be beneficial?

Currently I am running;
QX9650 @ 4Ghz
4870x2 Crossfire (x2)

Cooling by a Feser 120.3 and two 120.1 radiators (Feser & TC).
The temps of all the components are acceptable.

CPU under load is 55c
GPUs under load are 44c and 48c

Single loop

Pump > 120.3 > CPU > 120.1 > GPU1 > 120.1 > GPU2 > RES

BTW, I am planning to move from my P182 over to a Cooler Master ATCS 840. So there will be a tremendous amount of room. I also have a spare 120.3 and 120.2 (Swiftechs) so I may change out the radiator between the GPUs for the 120.2 if I keep them in a single loop.

Thoughts?