Okey, so i have been changing my mind a little bit. Im thinking of those components:
Atom Rangley C2358 2-Core 7W, 4*Gbit mini-ITX motherboard
DDR3 soDIMM ECC Kingston
Cooler Master Elite 110
WD Red SOHO NAS (x3)
I will test with the PSU i have and replace it if it is crap with this one: http://www.ebay.com/itm/picoPSU-150-XT-DC-DC-150-Watt-/400396065779?hash=item5d39771bf3:m:mj4G4THDPBTsh7J4L4AbMdg
What do you guys think? Is it enough power in that CPU and will everything work together?