7950 AMD Build vs 7850 Intel Build

I am having a hard time deciding what to go with here. Could use some advice. I am building a new PC, and I'm going for AMD graphics either way. So I can either go AMD or Intel. So my choices are the FX 4300 and the 7950, OR the 7850 and an i5 3570k... I know AMD is kind of a dead end when it comes to processors (or so I am told), but if I went AMD, would it be able to last me for 3 years at least? Or would the 3570k be more "future proof"? Basically, can I upgrade the Graphics card a year and a half from now, and not worry about my AMD processor bottlenecking it? Or would you recommend Intel for now, and if I want to Xfire or upgrade the GPU completely, I shouldn't have those problems? Any advice or suggestions would be greatly appreciated!