Hey there, here is my recommendation for your rig.
-replaced cpu with 8320 as they are typically the same cpu and they can be overclocked to the same frequency, there is no need to pay extra cash
-replaced motherboard to a better overclocking version
-replaced cooler to the most famous, performance proven 212 Evo
-replaced gpu with 7870xt, cheaper and more effective, relatively better performance than gtx760
-replaced memories with dual slot