I was talking about generalities and having options..... and the "case is a case" comment that might imply to anyone reading this thread that just about any case can meet everyone's needs. It is important to kno when choosing a case whether it can fit the air cooler ya want if that's the direction you wanna go ... whether it can fit that 360 radiator ya want or if only a 240 will fit., etc....some cases will, some cases won't.
Having as many options available as possible gives you alternatives when something you assumed would work, doesn't because of something ya didn't expect. See the Asus WS / Kuhler 620 example below.
Yes, it's odd that we still see those holes exiting the case tho I haven't actually seen a build with an external radiator in ages....not many on the market anymore. Here's some ideas if ya thinking that way
http://www.frozencpu.com/products/13913/ex-wat-179/Koolance_Exos-2_V2_External_Water_Cooling_Kit_-_Black_EX2-755_-_and91no_nozzles_.html
http://www.frozencpu.com/products/13919/ex-wat-180/Koolance_KIT-EHX1320CUV_4-Fan_Radiator_and_FansShroud_-_Black_No_Fittings_Copper_Version.html
Just cause the 920 fits under one circumstance, doesn't mean it will all the time even in the same particular case.....Using a bigger case than the Storm Enforcer, I couldn't fit a 620 in one user's build because he chose, and wisely so, an Asus WS Mobo which does 3 cards in SLI but more importantly, has 3 full slots between the 1st SLI slot and the 2nd. This allows extra air space between 2 cards in SLI and ya dont have the top card acting as a chimney for the bottom one.
The downside however was that this means the top SLI slot was higher than on a typical MoBo and the bottom of the radiator hits the GFX card.
In your case, I can't say whether the case is up to the job you are considering cause the manufacturer's web site doesn't give enough information..... or at least i didn't find it. I imagine if you did, you wouldn't have been asking the question so I don't feel inept at this point
It would be nice if everyone did what they did in this regard for the new Phanteks Enthoo case. And when I saw this I was 1st impressed but then, after closer inspection I found the material contradictory.... the FAQ says maximum height is 70mm at the top.....is that radiator thickness only or thickness with fans mounted in push pull ? Two fans wud eat up 50mm of that 70 if so.
FAQ -
http://phanteks.com/assets/enthoo-primo/FAQ3.png /
http://phanteks.com/assets/enthoo-primo/FAQ4.png
Video -
http://phanteks.com/#&panel1-1&panel2-1 Hit H2) Possibilities
All water cooling is by necessity "closed loop"....otherwise there'd be water all over the place. Other than reducing the weight on ya MoBo, which certainly is handy for LAN party boxes and such, I don't really understand the usefulness of these ALC coolers. When equipped with the same fans, they don't match the capabilities of the better air coolers.
http://archive.benchmarkreviews.com/index.php?option=com_content&task=view&id=721&Itemid=62&limit=1&limitstart=5
Corsair H70 64.7 +3.5
Coolit ECO A.L.C. 64.3 +3.1
Antec Kühler H2O 920 61.2 +0.0
Cooler Master V6 GT 59.5 -1.7
Prolimatech Super Mega 59.4 -1.8
Antec Kühler H2O 620 58.7 -2.5
Thermalright Venomous X 58.0 -3.2
Thermalright Silver Arrow 55.8 -5.4
I think you are moving wisely in the right direction in moving from ALC to a custom water loop.
One ya might look at is the Coolermaster Prestige 240L....CM shud be able to give ya fit advice. Newegg reviews are very favorable.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103184
As far as the Raystorm....reservoir coolers tend to be noisy, ... the rattling around and such. I am slightly concerned about the XSPC X2O 750 Reservoir Pump in, and by that I mean *inside" the reservoir* . To that end I would also look at the XSPC Raystorm EX240 Universal CPU Water Cooling Kit w/ D5 Variant Pump
http://www.frozencpu.com/products/16070/ex-wat-210/XSPC_Raystorm_EX240_Universal_CPU_Water_Cooling_Kit_w_D5_Variant_Pump_Included_and_Free_Dead-Water.html?tl=g30c321s1310
I had intended to use this kit in an upcoming build but with a 2nd pump as backup up in case one went south. This kit will allow you that option later on if ya wanna go that way or want to add WC to your GPUs. Either way it's gonna be better than what ya have now and should be fun to build.