I have almost an identical setup with similar purpose except I wont transcode.. node case, same mobo, however I went with a pentium G3258 processor and crucial ram. My problem is the bios on my board was shipped with 1.6 so I cant run any haswell-r processors. Asrock is sending me a new bios chip with 2.1 on it, but until then I am stuck. You will be ok since your chip is good on all bios. I even tried to source an older haswell locally, but no one carries them any more. I went with the a seasonic g360 - gold non modular. Its a nice power supply but its not modular so cable management was a ***** in that case :) Hindsight being what it is, I would have spent the extra $$ for the modular. I too am debating the red vs green. I think I am going with the greens and will run wdidle. However, as I was reading through that thread it seems that there is some question on weather or not the new green firmware doesnt work with wdidle.
good luck!