Not bad, but I think you would be better off with a 390X. A little less performance than the GTX 980 but much cheaper, and will probably beat the 980 in new DX12 games being released. I would also use the B2, G2, GS series PSU's over the B1. Better quality.
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html