There you are, all the possible memories you can get. Tip: Don't get the hyper X predator 2400, i had problems with it and my 6700k , had to change motherboard and BIOS update it for it to work!
The Pro Gaming supports up to 64GB in a 4x16GB config, so yes 2x8GB will be fine, I suggest the GSkill Ripjaws V or their TridentZ line of DRAM, with a K model CPU 3000 or 3200 is the sweet spot for price to performance