Is the H440 enough space for cooling this build?

I have some suggestions:

Re: cooling.

1. Use GTX980 cards with blower coolers. That gets heat directly out the back of the case.
2. Your case supports 3 120mm front intake fans. I would at least try them first. They should do the job.
If you prefer, two 140mm intake fans will be ok too, and would likely be quieter.
3. If your front intake air is filtered, you will have a positive pressure case which will be largely free of dust.
4. Use only a single low speed exhaust fat at the rear to direct the airflow. If it is too strong, you will draw in unfiltered air from other openings in the case.
5. Use a nice tower type air cooler with a slow turning 120 or 140mm fan. Noctua and Phanteks are good.

6. My canned rant on liquid cooling:
------------------------start of rant-------------------
You buy a liquid cooler to be able to extract an extra multiplier or two out of your OC.
How much do you really need?
I do not much like all in one liquid coolers when a good air cooler like a Noctua NH-D15 or phanteks can do the job just as well.
A liquid cooler will be expensive, noisy, less reliable, and will not cool any better
in a well ventilated case.
Liquid cooling is really air cooling, it just puts the heat exchange in a different place.
The orientation of the radiator will cause a problem.
If you orient it to take in cool air from the outside, you will cool the cpu better, but the hot air then circulates inside the case heating up the graphics card and motherboard.
If you orient it to exhaust(which I think is better) , then your cpu cooling will be less effective because it uses pre heated case air.
And... I have read too many tales of woe when a liquid cooler leaks.
google "H100 leak"
-----------------------end of rant--------------------------

Your pc will be quieter, more reliable, and will be cooled equally well with a decent air cooler.
7. I have become a bit jaded on the subject of haswell cooling for overclocking.
How high you can OC is firstly determined by your luck in the bin lottery.
I had high expectations from the Devil's canyon parts and their better thermals.
I found out that the thermals really do not matter unless, perhaps, you are a competitive overclocker.
Haswell runs quite cool, that is, until you raise the voltage past 1.25v or so.
Once you go past 1.3v, then you really do need very good cooling to keep stress loads under say 85c.
But, the consensus is that voltages higher than 1.30 are not a good thing for 24/7 usage.
I have been unable to find any official Intel recommendation on what is a safe vcore limit.

Even if you can handle the heat, how much do you really need that extra multiplier from say 4.4 to 4.6?


Other thoughts:

1. Do you really have a use for 32gb of ram?
If you do need 32gb, buy a matched 32gb kit or it may not work and will not be supported by any ram vendor.
And... Vengeance pro is just a brand. Better to buy low profile to avoid any cooler conflicts. 1866 speed is optimum .
G.skil ares series is good too.