I would suggest you to oc the fx 6350 to 4.6 or above to reduce bottleneck and use dual channel RAM. To be honest the gtx 1070 would be hugely bottlenecked by your cpu. I was using fx 8320 and oc'd it to 4.6 ghz and has gtx 970 running with it, I was getting 50 fps in Crysis3, 40 fps in GTA V, Skyrim (yes dips to 35 fps in cities), farcry 4 and Witcher 3. Fallout 4 was running at 25 fps in boston, rest of the areas 40-60 fps.
I swapped fx with core i5 6500, even at stock 60 fps (there were dips but for flip second) in all the above games except crysis which still runs better than the 8 core fx. I was surpised how smooth did GTA V, Fallout 4, Skyrim ran on it. This is almost of difference of 15-20 fps without any change in gpu. I...