Nice build, and you'll probably be able to pick better parts for the same amount or the same for less by December.
That said, as well as going for a bigger SSD as Zkuq said, you should double your amount of RAM. 1 stick of 8GB won't be enough, get a second one or a 2x8GB kit. And since you're planning to go with an AMD CPU, the faster the memory, the better it will perform. A 3000 or 3200MHz kit should be your goal.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.