Well I suggest that since that cpu is for over clocking and you’ve technically already done some of that i would suggest an AIO. I’m running a Ryzen 1700x as well and it’s running 20c and below at idle. When in use and gaming I’m not sure. Probably very cool though. Most AIOs also have preapplied thermal paste so that’s a plus. Usually you can get a good AIO for around 50 - 100 USD. For Ryzen 7 I would suggest a Kraken M22 which only has 120mm rad so it won’t take up much space in your build. I’m running an EVGA CLC 280. I already over clocked to 4.0ghz and run idle still a little above 20c. Just OC with caution and make sure you have a good psu.