I plan to host 3 sp10 and 3 sp30. I will cool it with air from the house (~20°C atm) and when temp will get higher i will buy an AC for the house. I will put it in a very small room but with high air flow. In add off, i don't plan to stock those appliance horizontal but vertically with a big fan on bottom and big extractor on top.
I believe that it will be good for several reason :
- heat goes up
- horizontal fan make less noise
- easier for me to stack it (the room is very tiny)

Here my plan :

The grey part will be stick to the appliances with a hole to make place for power supplies (I plan do to twice shown on picture).
The fan on bottom is... a fan, nothing more
The air extractor will be something like this : http://www.cultureindoor.com/1299-extracteur-winflex-vk-100-mm-250-m3-h.html
Notice it's from a growshop, they do great pricing.

My last concern is about the bottom of appliance getting hot. I guess i will put 1/2 cm between each appliance and let the fan/extractor do the rest.

Last but not least, i hate the noise. really, badly, whatever... :@
So, i will isolate the door (got some good experience there) and catch the noise with self-adhesive acoustic foam. Already found some very good foam with an α (alpha Sabine) over 0.80 for frequency over 2kHz.

Of course, I've already installed the smoke detector, just in case off :p

Tell me what you think and, SP-T, please tell me if putting the miners vertically is a problem...

Regards,

PS:i shall be delivered on monday, tuesday, so expect pictures soon