To knock this badly given advice about choosing a watercooler over an air cooler or even a stock cooler, I'd advise the OP
and the person advocating the need for a watercooler to please
read the watercooling sticky. It's linked in my sig space and has been there since the first revision of the sticky was created.
If you
scroll down to the CLC section, you'll learn that I wrote that bit up and I've also included pro's and con's to it.
In short, if you're able to manage with the stock cooling, then you can save up money and either invest on a good air cooler or invest in a watercooling unit, but only when you're seeing that the ambient air temps are favorable and you're being held back by your cooler. Often times airflow in a chassis is what will impede your temps. All of this is covered in the watercooling sticky and
I WILL NOT recommend a 120mm AIO for any build regardless of what you're doing, unless you've given us free licence to waste your money(which is
not the Tom'sHardware way).
@WackyHatter I did a minor revision on my colleagues build, listed on PCPartPicker, it's priced slightly higher but is on a smaller form factor, added a chassis(so you should ditch the Deepcool chassis you have now, i.e, sell it), have two SSD's one as your main (OS)drive and the other for your game library. You have room to upgrade the storage, cooling, PSU and GPU(down the road).
PCPartPicker Part List
CPU: AMD Ryzen 5 3600 3.6 GHz 6-Core Processor ($269.00 @ Shopping Express)
Motherboard: ASRock B450M Steel Legend Micro ATX AM4 Motherboard ($139.00 @ Centre Com)
Memory: G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 Memory ($124.00 @ Shopping Express)
Storage: Samsung 970 Evo Plus 500 GB M.2-2280 NVME Solid State Drive ($165.00 @ BudgetPC)
Storage: ADATA SU800 512 GB M.2-2280 Solid State Drive ($106.98 @ Mwave Australia)
Storage: Hitachi Ultrastar 2 TB 3.5" 7200RPM Internal Hard Drive ($50.30 @ Amazon Australia)
Video Card: Gigabyte GeForce GTX 1660 SUPER 6 GB GAMING OC Video Card ($379.00 @ Mwave Australia)
Case: Silverstone PS15 MicroATX Mid Tower Case ($59.00 @ PCCaseGear)
Power Supply: Corsair CX (2017) 550 W 80+ Bronze Certified ATX Power Supply ($89.00 @ Austin Computers)
Operating System: Microsoft Windows 10 Home OEM 64-bit ($118.00 @ Amazon Australia)
Total: $1499.28
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-03-10 19:20 AEDT+1100
I would've split the SSD purchase into two but I noticed that the 250GB version of the 970 Evo plus isn't as cheap as I'd like it to be. If you're worried, you could look at this:
PCPartPicker Part List
CPU: AMD Ryzen 5 3600 3.6 GHz 6-Core Processor ($269.00 @ Shopping Express)
Motherboard: ASRock B450M Steel Legend Micro ATX AM4 Motherboard ($139.00 @ Centre Com)
Memory: G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 Memory ($124.00 @ Shopping Express)
Storage: Samsung 970 Evo Plus 250 GB M.2-2280 NVME Solid State Drive ($109.00 @ BudgetPC)
Storage: ADATA SU800 512 GB M.2-2280 Solid State Drive ($106.98 @ Mwave Australia)
Storage: Hitachi Ultrastar 2 TB 3.5" 7200RPM Internal Hard Drive ($50.30 @ Amazon Australia)
Video Card: Gigabyte GeForce GTX 1660 SUPER 6 GB GAMING OC Video Card ($379.00 @ Mwave Australia)
Case: Silverstone PS15 MicroATX Mid Tower Case ($59.00 @ PCCaseGear)
Power Supply: Corsair CX (2017) 550 W 80+ Bronze Certified ATX Power Supply ($89.00 @ Austin Computers)
Operating System: Microsoft Windows 10 Home OEM 64-bit ($118.00 @ Amazon Australia)
Total: $1443.28
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-03-10 19:25 AEDT+1100
which is the same listing but with a 250GB 970 Evo Plus in there.
This one has a better PSU,
PCPartPicker Part List
CPU: AMD Ryzen 5 3600 3.6 GHz 6-Core Processor ($269.00 @ Shopping Express)
Motherboard: ASRock B450M Steel Legend Micro ATX AM4 Motherboard ($139.00 @ Centre Com)
Memory: G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 Memory ($124.00 @ Shopping Express)
Storage: Samsung 970 Evo Plus 250 GB M.2-2280 NVME Solid State Drive ($109.00 @ BudgetPC)
Storage: ADATA SU800 512 GB M.2-2280 Solid State Drive ($106.98 @ Mwave Australia)
Storage: Hitachi Ultrastar 2 TB 3.5" 7200RPM Internal Hard Drive ($50.30 @ Amazon Australia)
Video Card: Gigabyte GeForce GTX 1660 SUPER 6 GB GAMING OC Video Card ($379.00 @ Mwave Australia)
Case: Silverstone PS15 MicroATX Mid Tower Case ($59.00 @ PCCaseGear)
Power Supply: SeaSonic FOCUS Gold 550 W 80+ Gold Certified Semi-modular ATX Power Supply ($119.00 @ Scorptec)
Operating System: Microsoft Windows 10 Home OEM 64-bit ($118.00 @ Amazon Australia)
Total: $1473.28
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-03-10 19:28 AEDT+1100
Mind you, they are all priced way below what you've listed in your initial post.
whether it is beefy enough to run at least 144fps.
What games(without including an etc in that sentence)? What resolution?