You can cheap out on every other component inside the PC except PSU. Since PSU powers everything, it is the most important component inside the PC and if you care about your system, you do not want to cheap out on PSU. Also, while the PSU warranty covers the PSU itself and you can RMA the blown PSU, the PSU warranty doesn't cover any other component the PSU fried when it died.
That being said, for a good quality PSU, Seasonic 500W range PSU would be more than enough for your system, e.g M12II-520 EVO, G-550, Focus 550 or Focus+ 550,
pcpp: https://pcpartpicker.com/products/compare/TgW9TW,DPCwrH,bkp323,KmgzK8/
Focus and Focus+ are the newest PSU lines from Seasonic and they come with 10 years of OEM warranty. G and M12II EVO series PSUs...