FMod

It can help the GPU at the expense of messing everything else up.

Really you should build either + or - system, and - is usually better and certainly easier to make right. Pressure is more important than direct flow. If your room isn't very dusty, go with negative pressure, i.e. much more exhaust flow than intake flow.

You really *don't* need a fan for the side. That will mess up your airflow: 200mm front+200mm side ~= 200mm top + 140mm rear + GPU + PSU.

That creates ambient pressure in the case, worst-case scenario. Best is negative, the drawback is negative gathers a lot of dust and needs more cleaning. Positive is OK, and dust is easier to filter out (all through the intake fans). Ambient is no good.

Well, that case says in the description two fans are already provided, and their LEDs can be turned off.

There's no need to add another fan, generally, the case has enough flow. Though I can find 200mm non-LED fans pretty easily, there's Antec and NZXT ones.

No, no way. Unless the fan supports it. I use duct tape to cover undesired LEDs, it's probably not possible with a fan though.

There is rarely any need for *two* 200mm fans though. Airflow should be structured with negative case pressure, i.e. the sum total pressure of exhaust fans should be greater than that of intake fans. Virtually all cases with 200mm fans I've seen have ...

Yes, only one of the fans. However if they are identical you could plug them together, takes a bit of cutting and soldering (or connecting otherwise). Not 100% reliable.

Generally push/pull configuration is not needed if not overclocking hard. A good heatsink like Mugen 2/3 or Ninja 3 can work with stock fan at minimal rpm and still maintain the nominal temperature.