That is $500 over budget.
WildCard has a really good build.
Is your monitor included in the budget? Do you need an OS?
Here are two builds, one in the US and another in the Netherlands. I have kept $2100 constant as the budget and converted the currency when needed:
US -
PCPartPicker part list:
https://pcpartpicker.com/list/CrWN6s
Price breakdown by merchant: https://pcpartpicker.com/list/CrWN6s/by_merchant/
CPU: Intel - Core i5-8600K 3.6GHz 6-Core Processor ($238.99 @ Amazon)
CPU Cooler: Noctua - NH-D15 82.5 CFM CPU Cooler ($86.20 @ Newegg)
Motherboard: ASRock - Z370 Killer SLI/ac ATX LGA1151 Motherboard ($141.16 @ OutletPC)
Memory: G.Skill - Aegis 16GB (2 x 8GB) DDR4-3000 Memory ($154.99 @ Newegg)
Storage: Team - L5 LITE 3D 240GB 2.5" Solid State Drive ($54.89 @ OutletPC)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($43.90 @ OutletPC)
Video Card: EVGA - GeForce GTX 1080 8GB Superclocked Gaming ACX 3.0 Video Card ($549.99 @ B&H)
Case: Phanteks - Enthoo Pro M Tempered Glass (Black) ATX Mid Tower Case ($79.99 @ Newegg)
Power Supply: EVGA - SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($74.88 @ OutletPC)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($95.89 @ OutletPC)
Monitor: Dell - S2716DG 27.0" 2560x1440 144Hz Monitor ($435.00 @ Amazon)
Total: $1955.88
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-06-02 00:47 EDT-0400
Way below budget. 8600k and the Motherboard has WiFi Built in so you do not need the WiFi adapter, making things less cluttered and more streamlined. GTX 1080 and PSU is quality. Includes OS and Monitor is 144Hz 1440p 1ms.
Netherlands - $2100 = 1800 Euros
PCPartPicker part list:
https://nl.pcpartpicker.com/list/CjLz6s
Price breakdown by merchant: https://nl.pcpartpicker.com/list/CjLz6s/by_merchant/
CPU: Intel - Core i5-8600K 3.6GHz 6-Core Processor (€259.00 @ Paradigit)
CPU Cooler: Noctua - NH-D15 82.5 CFM CPU Cooler (€89.90 @ Paradigit)
Motherboard: MSI - Z370M GAMING PRO AC Micro ATX LGA1151 Motherboard (€169.99 @ Paradigit)
Memory: Corsair - Vengeance LPX 16GB (2 x 8GB) DDR4-3000 Memory (€199.00 @ Paradigit)
Storage: SanDisk - SSD PLUS 240GB 2.5" Solid State Drive (€64.99 @ Paradigit)
Storage: Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive (€45.90 @ Paradigit)
Video Card: MSI - GeForce GTX 1070 Ti 8GB Video Card (€509.00 @ Paradigit)
Case: Corsair - Carbide Series 275R (Black) ATX Mid Tower Case (€79.00 @ Paradigit)
Power Supply: SeaSonic - FOCUS Plus Gold 550W 80+ Gold Certified Fully-Modular ATX Power Supply (€84.95 @ Paradigit)
Operating System: Microsoft - Windows 10 Home OEM 64-bit (€109.00 @ Paradigit)
Monitor: AOC - G2460PF 24.0" 1920x1080 144Hz Monitor (€258.00 @ Paradigit)
Total: €1868.73
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-06-02 06:52 CEST+0200
68 over. BUT, Motherboard has Wifi built in, OS is included, Monitor is 1080p 144hz 1 MS, although the GPU became a 1070Ti to fit the budget. Rest all is the same.
Both of these builds have WiFi built in and have OS. If you do not need the OS you can remove it save costs and use the money for a better GPU or a bigger SSD or a better monitor. PSU's in both of these builds are quality units.