Building my first high-end gaming PC

You have the right idea with your components, but there are a few things that you can improve on to lower the price while not giving up performance and even increasing performance.

The 4790k is a good choice and is probably the best consumer CPU out at the moment, but keep in mind that by August Broadwell and Skylake may be release which will probably give you a couple of more options for CPUs.

The H100i is a pretty good cooler especially for the price it is at right now, if you want maximum cooling potential in an AIO the NZXT Kraken X61 is a better performer, whether it is worth the extra $40 is up to you.

The Maximus VII Hero is better than the Ranger in terms of overclocking and features plus it costs $100 less, pretty obvious to change them out.

There is no point in getting a quad kit of ram for Z97 since it doesn't run quad channel, so getting two sticks of 8gb ram will be more efficient and allow for another 16gb upgrade if needed in the future. Also the ram kit you included was overpriced by almost $100, anyways I switched it out.

The 850 evo is a great choice for an SSD, but the WD Black Series isn't much better than some other choices like the Seagate Barracuda if you are just looking for mass storage so I switched that out.

The Twin Frozr 980 is a good choice, but as you said the 980ti will probably be out soon, not to mention the new AMD 300 series.

For your case, I switched it out for its main competition, the Enthoo Pro, it is better in basically every way and costs less.

The XFX Power Supply you had before was a great choice, but for the same price you can get the EVGA G2 850W, the quality is just as good, and has 100W more power as well.

Personally I don't think the ROG Swift is worth the money and there is a practically identical Acer monitor for $250 less, but that's up to you to decide.

here is my recommended part list. Hope I helped.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($316.99 @ SuperBiiz)
CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler ($83.99 @ Newegg)
Motherboard: Asus MAXIMUS VII HERO ATX LGA1150 Motherboard ($197.00 @ NCIX US)
Memory: G.Skill Trident X Series 16GB (2 x 8GB) DDR3-2400 Memory ($139.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($99.99 @ Amazon)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($71.88 @ OutletPC)
Video Card: MSI GeForce GTX 980 4GB Twin Frozr Video Card ($549.99 @ Amazon)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($99.99 @ Amazon)
Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($117.99 @ NCIX US)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($86.95 @ OutletPC)
Monitor: Acer XG270HU 144Hz 27.0" Monitor ($507.58 @ Newegg)
Total: $2272.34
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-17 11:30 EDT-0400