OK Ive got this
I will proboably dissapoint You but I bought other products than You recommended:P
SilentiumPC Spartan HE923
and only one SilentiumPC Zephyr 92
The case fan will take the air out from the back. I will also remove that side tube and leave big hole in that case so hopefully enough air will be sucked in.
About that cpu fan. Which way to install it? and how much silk to apply?