New pc build Help

i am looking to build a new computer for blender and video editing i.e premiere pro and blender vse, please dont mention anything about cycles rendering-as i know its better with a powerful gpu…

so the choices are:
8370 oced 4.7
4790k oced 4.7
5820k oced 4.7

i really wanna know how each cpu would perform when sculpting and viewport as currently i am using the 1055t oced to 3.7

my gpu is the 780 6gb and im looking to get another gpu i.e. the r9 390…
thanks