Is this a good gaming PC for £1800?

[iamolinats]

1) Case: Bitfenix Nova Midi-Tower Black Window

2) Power Supply: Corsair VS Series 650W 80+

3)CPU: Intel Core i7-8700K

4)CPU Cooler: CoolerMaster Hyper TX3 EVO

5)Motherboard: Gigabyte Z370 Aorus Ultra Gaming

6)RAM: Corsair Vengeance LPX 16GB DDR4-3000MHz.

7)GPU:

a) Gigabyte GeForce GTX1080 8GB Windforce

b) MSI GEFORCE GTX1080 ARMOR 8G OC
(haven't decided yet)

8)SSD and HDD:

SSD: KINGSTON SSDNOW A400 240GB
HDD: Toshiba DT01ACA200 2TB

9)Optical Drive: LG GP57EB40.

10)Monitor: LG 23MP68VQ-P

 

[n0ns3ns3]

It's far from good deal
1. mediocre PSU
2. Bad (for i7) motherboard
3. inadequate cooler
4. slow SSD.
5. 1080p@60Hz monitor.

here is an example of much better components for the same price. note the much larger SSD

CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor (£282.99 @ Aria PC)
CPU Cooler: be quiet! - Dark Rock 4 CPU Cooler (£54.77 @ CCL Computers)
Motherboard: Asus - Prime Z370-A ATX LGA1151 Motherboard (£135.33 @ Amazon UK)
Memory: Corsair - Vengeance LPX 16GB (2 x 8GB) DDR4-3000 Memory (£161.99 @ Box Limited)
Storage: Crucial - MX500 500GB 2.5" Solid State Drive (£100.79 @ Aria PC)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive (£46.95 @ Aria PC)
Video Card: EVGA - GeForce GTX 1080 8GB FTW DT GAMING Video Card (£486.49 @ Amazon UK)
Case: Fractal Design - Meshify C Dark TG ATX Mid Tower Case (£73.34 @ Amazon UK)
Power Supply: Corsair - TXM Gold 750W 80+ Gold Certified Semi-Modular ATX Power Supply (£80.39 @ Aria PC)
Monitor: Asus - MG279Q 27.0" 2560x1440 144Hz Monitor (£399.98 @ Amazon UK)
Total: £1823.02

 

[King Dranzer]

Here is the list:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor (£282.99 @ Aria PC)
CPU Cooler: CRYORIG - H5 Universal 65.0 CFM CPU Cooler (£44.99 @ Overclockers.co.uk)
Motherboard: Asus - TUF Z370 Plus Gaming ATX LGA1151 Motherboard (£123.97 @ Box Limited)
Memory: Team - T-Force Vulcan 16GB (2 x 8GB) DDR4-3200 Memory (£149.99 @ Overclockers.co.uk)
Storage: Crucial - MX500 500GB 2.5" Solid State Drive (£100.79 @ Aria PC)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£34.79 @ Aria PC)
Video Card: Zotac - GeForce GTX 1080 Ti 11GB AMP Extreme Core Video Card (£673.54 @ Amazon UK)
Case: Phanteks - Enthoo Pro ATX Full Tower Case (£87.85 @ More Computers)
Power Supply: EVGA - SuperNOVA G3 (EU) 650W 80+ Gold Certified Fully-Modular ATX Power Supply (£87.99 @ Amazon UK)
Monitor: AOC - G2460PG 24.0" 1920x1080 144Hz Monitor (£299.99 @ Aria PC)
Total: £1886.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-05-19 16:26 BST+0100

This is a strong build.
Before people complain about GTX1080Ti and 1080p combo. I would recommend checking out the monitor I included. It is a high refresh rate 1080p G-Sync monitor which goes perfect with GTX1080Ti as user can enjoy high fps in games over longer period of time which makes gaming experience a lot smoother and enjoyable unlike the situation where GPU is not able to maintain that high performance after some time. I expect that answers all the questions.