KC you are always welcome for advice, tips, chat, suggestions or even stories. I am sure you must be excited like a kid at the idea of getting your new pc
It´s a good rig too with the specs you described and a brand new ATI 4870 you´re going to play TvsT, Steel Fury, Panzer Elite, T72 etc in great details, with high fps and very smooth running....Once you get your pc don't forget to install DirectX9C as most of these games require it and your pc will likely come with either Direct X10 or 11 (

although you don't have an OS pre installed on your pc.).Better check with the retailer what drivers come with your pc of if there aren't any?
Cheers