I need a machine for Eternal Crusade

Hey guys, the last time I built a PC was about 6 years ago and I need a new one because Eternal Crusade is coming and I am a massive 40k nerd. The minimum specs for the game are

CPU: INTEL Core i5-750 or similar GPU: NVidia GTX 660+ or similar Memory: 8 GB DDR3 Hard Drive: 50GB Free Disc Space OS: 64-bit Operating Systems (Windows 7, Windows 8, Windows 8.1, SteamOS, MacOS X 10.9)

But I want this game running 60FPS maxed out, so we're going to have to beat the minimum specs. I do not need any new peripherals, I am located near Charlottesville Virginia. As for a budget, I'm looking for the least expensive option, but it's fine to throw in a few extra bucks where it's worth it. I've been a bug PC gamer for a while, so obviously I'll be using the rig for other games, but this is the game I want play at it's best.

Thanks guys!