Go with a X570 chipset motherboard. If that's too costly, then search for B550.
Go find the manufacturer for your GPU (I don't know if it's FE GPU or an AIB GPU) and look at the recommended PSU. The starting PSU is 550W for the NVidia 2060 Super. If you have an higher clocked GPU from Asus or Gigabyte, they may recommend 650W or 600W. Just look up the manufacturer's recommendation.
Fractal Design Meshify 2, Lian Li LianCool II Mesh, or beQuiet Silent Base 802 are good cases for air flow.