You don't need liquid cooling unless you're OCing, which most people don't do. The Cooler Master cooler is a big heat-sink that uses air to keep your CPU cool. Its cheaper than what you picked, and you can still do a small OC if you want in the future. 
If you have a limited budget, there's give and take. You can save $100 on a cooler and buy more fans, or more memory, or more HD space. The rule of thumb is if you don't need it for your application, don't spend money on it.
I suggested saving money on the case and cooler, and going for a better SSD, which in turn makes your computer faster, because you don't need it colder.  You can buy a great case for under $100, and just add more fans, which cost around $20 a piece (for REALLY nice fans)  and you're in the same boat as the $400 case.  You don't have to spend a ton of money to get a really smoking fast computer. For example, the M.2 SSD I suggested (and own personally) supports a higher data bandwidth, and faster read/write speeds so programs launch faster, file transfers are quicker, and it doesn't bottleneck your CPU or RAM.  It costs more, but its way faster. So, don't spend $530 on a cooler and case you don't need, and buy an SSD that's better for what your application is.
If you're not looking to build in October, put together a final list a few days before you buy. Locking yourself into a specific idea of what you want now will limit you.  Computer components change weekly.  So do some research, read tech articles, Google up the components.
As an example: The CPU cooler you need, faster SSD, better MOBO that's more future proof, a cheaper case that's just as good (with two fans added) and I saved you $300.  So now you can spend that on other components.
PCPartPicker part list / 
Price breakdown by merchant
CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor  ($409.99 @ Memory Express) 
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler  ($38.45 @ Vuugo) 
Motherboard: Gigabyte GA-Z170X-UD5 TH ATX LGA1151 Motherboard  ($257.75 @ Vuugo) 
Memory: G.Skill Ripjaws V Series 32GB (2 x 16GB) DDR4-3200 Memory  ($195.98 @ Newegg Canada) 
Storage: Samsung 950 PRO 256GB M.2-2280 Solid State Drive  ($234.98 @ DirectCanada) 
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive  ($84.98 @ DirectCanada) 
Video Card: Asus GeForce GTX 1080 8GB STRIX Video Card  ($949.00 @ Canada Computers) 
Case: NZXT Phantom 530 (Black) ATX Full Tower Case  ($159.75 @ Vuugo) 
Power Supply: EVGA SuperNOVA P2 850W 80+ Platinum Certified Fully-Modular ATX Power Supply  ($159.98 @ Newegg Canada) 
Wireless Network Adapter: Gigabyte GC-WB867D-I PCI-Express x1 802.11a/b/g/n/ac Wi-Fi Adapter  ($40.00 @ shopRBC) 
Case Fan: NZXT Air Flow Series 59.1 CFM  120mm Fan ($25 @ Newegg Canada)
Case Fan: NZXT Air Flow Series 59.1 CFM  120mm Fan ($25 @ Newegg Canada)
Total: $2580.86
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-06-26 15:28 EDT-0400
Keep in mind this will all change in a couple months. Hope that's helpful.