Building a new PC, want to be able to play Dolphin and stream at 3500-5000kbp/s

[KHg8m3r]

Your build is needlessly overpriced. Dolphin only looks at single core speeds on two cores (3 if using LLE on separate thread), and the i7-4790K can be overclocked to 4.7 GHz, which is around the same level as the i7 extreme processors. All those extra cores aren't going to be used by Dolphin, and unless you have really shitty streaming software, it'll run fine on the 4790K