Planing to Upgrade my old i5 4670k Hashwell PC

Current Man Cave Setup

Right now here's my PC that I'm using:

Processor: i5-4670K
Memory: G.Skill RipjawsX DDR3 1600 4GBx2kit CL9 Red F3-12800CL9D-8GBXL
Motherboard: Asus Maximus VI Gene
PSU: Corsair RM850w
Case: Bitfenix Phenom M
GPU: Galax EXOC GTX 1060 6GB 
Hard disk #1: 2TB
SSD: Plextor M5 Pro 128gb

Here's the list of the PC parts that I planned to upgrade well its most likely a new PC apart from the Video Card and several Hard Disk Drive that I will migrate into the new PC. Lucky I bought the
Galax EXOC GTX 1060 6GB in Sept. of 2017 were in the price of the Video Card significantly dropped before it went up again right after December of 2017 due to the mining craze back then. I'll gonna hold on to this video card maybe 2 to 3 years depends if it will still hold up to the performance in the future of gaming.

I wasn't planning to upgrade my old MSI GTX 970 until it broke down I notice that the fans are not spinning even if I set it up through the Afterburner. I know that if the card is getting hot the fans will spin to dissipate the heat but the fans isn't spinning around even if you forced em to spin. There's no blockage of dust to the fans or anything. So I decided back in the day that I need to somehow replace it and went to buy a GTX 1060 6GB.

So far here's my planned PC Upgrade:

Processor: i5 8400
Motherboard: Gigabyte B360M D3H
Mem: G.Skills Ripjaws V 2400 8gb DDR4
Psu Seasonic M12II-520 EVO 520Watts 80Plus Bronze Full Modular
CPU Cooler: Cooler Master Hyper 212 LED
SSD Western Digital WD Green 240GB 3D Nand
Case: Tecware Nexus M (Black/White) Tempered Glass

Hoping the new PC will last me around 4 years same thing that I use with my old i5 4670K. Well honestly i5 4670k paired with GTX 1060GB is still performing well in most of the games that I played with High Settings smooth 60 fps on 1080p. I only game at 1080p so still perfectly safe that would depend if someday I would upgrade to 4k in the future who knows.

I have chosen an i5 8400 because it is much cheaper plus I only play Games and do some normal everyday task like browsing the web, watch TV, and most likely do some drawings with Photoshop. I'm not into any streaming stuff while gaming or doing any video editing I just like to play games. I only intend to use the PC in stock settings as much as possible that is why I have chosen a B360 motherboard. Well 8gb of  DDR4 is still plenty for most of the games but in the future I'll be upgrading it to 16gb of DDR4 ram.