Ok, well there is kind of a snag here. You said you want to eventually build a gaming rig, is that eventually as in within this year? Or eventually as in the distant future?
I can show you a decent PSU and decent cheap GPU that will get you by.
or I can show you a really good PSU and a GPU (that will be bottlenecked by your CPU), but you can use them in your gaming machine once you build it.