I have 3 computers with the SG06 300 watt power supply case that I use for the office. I have an i3 chip with the OEM chip fan, 8GB ram, and no graphics card. Temps never go above 36 C. see the first thread
My thoughts are if you can eliminate the 2nd hard drive it goes a long way to creating space. The 3.5" drive cage hangs below the optical drive which will limit you if you decide to go with an after market cpu cooler.
The hard drive light and power light on the front of the case are very bright and i ended up putting a bit of sticky notepad over them. You might just not want to hook them up if you think they will be distracting.
I haven't built anything with the prodigy case but I also think it is interesting and might use that for my next small build. Another one to look at is the SG09 (3rd link) but I don't see anyone selling it yet. I did see this review with more pictures (last link).
Simple Office PC - Small form factor Micro Sized ITX HTPC Build SilverStone Technology Co., Ltd.- SG09 http://www.kitguru.net/components/ca...sible-chassis/