Depends on how much money you wanna invest.
But IPC on FX8350 is sooo bad. I would go skylake K, DDR4 16GB, Z170 with a gtx 1060 or 1070.
Keep your 850evo and seagate 1TB OFC. Maybe your case as well, depends.
You should be able to sell your FX8350, 750ti, asrock 970 and the 16GB RAM for a reasonable price.
You could do a cheaper upgrade with like a used hashwell K cpu + z97 mobo. And use your current DDR3 ram. and maybe a used 970-980ti.
watch the different on just the CPU in gaming (Farcry 4 45fps FX8350 vs 77fps 6600k