Proposed 800D build (illustration inside)

[sakerfalcon]

I got in on the Corsair outlet case sale. Now with a full tower, I want to do a custom loop. Going by reported measurements from the components and research everything should fit except for pump. Can the more experienced members give some input on the loop?

I do plan to cut out part of the top panel to allow for a 480rad.

System specs is in sig (now with 800D)

Proposed loop components:
Waterblock: XSPC Raystorm (Link)
Radiator: XSPC RX480 (Link)
Reservoir: Generic Chinese 20cm radiator with mounting (Link)
Pump: Swiftech MCP35x (Link)
Compression Fittings, all 1/2" ID 3/4" OD
8 x Bitspower fittings (link)
6 x Bitspowe Rotary 45-degree extender (Link)
Fans: Noctua NF-P12 fans
Radiator Shroud: Koolance 480 shroud (Link)
Tubing: Primochill LRT Advanced

I went for Noctuas instead of GTs because I can get the Noctuas for $12 each, and I hear they are quieter, plus the XSPC RX480 has low FPI so that matches up well together for low-medium speeds, I think.

Is having PWM function for pumps important? There are other pumps which are controlled by voltage or not controllable at all - how much issue will I have with sound? Or just by motherboard voltage control? For voltage control pumps, do I need a fan controller for the pump?