The refresh rate is the speed at which your monitor refreshes your screen. What exact monitor will you use?
If it's 60hz, the i7 7700k is pointless and so is the GTX 1080. Just a waste of money as components for much cheaper can get the same job done.
Also, 32GB is overkill for gaming in general. Most games use beneath 8gb of ram, and only a handful are starting to use towards 16GB. 16GB of ram should be Anouilh for today's games and in the future.