why not amd fusion processor? extra hashes from the iGPU
cpu speed not very important imo. I got 112mh/s on the 5800k's GPU when mildly overclocked but no need to get black edition, A10-5700 is a bit cheaper & has the same GPU
as for the PSU, get a 600/650w 80+ gold one? aim for 50% load on your PSU for max efficiency