Should I Buy a 4th-gen Haswell?

I have a leftover mining rig after I've sold [almost] all of my mining GPUs. I want to have it available for gaming or other tasks such as light video editing. Should I buy a used i7-4770K ($225-$245)? Or sell the parts and build a Ryzen 5 1600 system?

Celeron G1840
GA-Z97X-Gaming 7
2x8GB DDR3 1600 CL9
SeaSonic PRIME 1200W Gold
RX 480 4GB Reference
Kingston V300 120GB SSD
 
Solution
For gaming and light video editing the i7 upgrade would work and it would be cheaper than a new ryzen system. If you were looking to concentrate more on video editing, the ryzen system would perform a bit better but again, cost would be higher.

On the intel system you're just looking at replacing the cpu. For ryzen you need to buy the cpu, new motherboard, ddr4 ram and reinstall windows.
For gaming and light video editing the i7 upgrade would work and it would be cheaper than a new ryzen system. If you were looking to concentrate more on video editing, the ryzen system would perform a bit better but again, cost would be higher.

On the intel system you're just looking at replacing the cpu. For ryzen you need to buy the cpu, new motherboard, ddr4 ram and reinstall windows.
 
Solution
I bought a used 4770K and although it's a bad overclocker I haven't had any issues doing anything. I have a GTX 1080 ti to go with it and it does very well in gaming. No problems yet and I can push very high frame rates with my hardware. I think you should go for the 4770K. It is totally worth it unless you can find a 4790K for a similar price.
 
An i7-5775C with 128MB L4 cache is just as fast for gaming as the latest Skylake 6700 or Kaby Lake 7700 despite the 600-700MHz lower clockspeed. There's a reason they still sell for the price they sold for new--it's the only non-mobile chip Intel made with eDRAM. And it fits in your board--just make sure you have at least the F8 BIOS

As mentioned if you are more interested in video editing performance, Ryzen offers so many more cores that it's well worth putting up with the somewhat beta-like character of its platform at the moment.