CPU/GPU loop, Define R4

[fieldsy36]

This is my first time doing a custom loop. I've done some research into parts, and would like some feedback on the parts. I chose a Pump/Res Combo to hopefully make it a little easier my first time:

CPU Waterblock: XSPC Raystorm
GPU Waterblock: EK-FC970 GTXNickel
Radiators: XSPC EX240 x2
Fans: Corsair SP120 x4 (2 for each Rad)
Pump/Reservoir Combo: I havent decided between the XSPC Dual 5.25in Res/Pump, or the XSPC Photon 170 Res/Pump.
Fittings: G1/4" 7/16ID 5/8 OD Compression Fittings

Also i'm not sure about the most efficient loop order to run

 

[Norton]

What are the rest of your specs?

I did a loop in a Define R4 and found the clearance between the mobo and the top radiator to be a little tight. I got in there but it wasn't easy...

Also, what tubing do you intend to use?

 

[fieldsy36]

What are the rest of your specs?

CPU: i5 4690K @4.0GHz
GPU: Gainward gtx 970
Motherboard: MSI Mpower MAX Z87
RAM: 8GB 2400-DDR3 Kingston
SSD: 128GB Kingston
HDD: 2TB WD Green

For tubing, I just got some PVC FLX Tubing from XSPC