Premiere mostly and gaming on the side.
Nvidia it is then. I'll get back to you with a build later. WiFi on this train is a bit ropey.
http://store.antec.com/Product/enclosure-gear_for_gamers/nine-hundred/0-761345-15900-5.aspx
Getting this case. A bit big but meh it's pretty and has a lot of fans. For the overclocking I won't do.
Don't.
Too big, too old. Look towards stuff like the Source 210, Corsair 200R and whatever else is in the OP.