Very nice rig, nicely balanced out in terms of performance as far as I can tell.
If you want to save money you could get a 980 with 4GB of RAM instead of the 980 Ti with 6GB, as I don't believe you'll really see much of a difference in frame rate between the two unless you specifically make large amounts of the RAM on your GPU available to games you play (at least that was the case with a heavily modded Skyrim for me, it may be that games are better at utilising it now to be fair). I mean partly it depends on the resolution you're using ofc, but for a standard 24" monitor I would just save the money tbh.
I assume you're building it yourself?