That Asus PRIME X570-P is about equal in quality as B450 Tomahawk Boards with interestingly now on offer fine looking price
What was the exact reason you want to go X570 and PCIe 4.0 ?
The 5700 XT wont be bottlenecked by PCIe 3.0 x16
Is 1550 your max budget or ?
You might be able to fit a 2070 Super inside if we safe on a lot of parts
Testmade one , if 1500 is your budget - this looks to be just fine, or 1550 with some good fans 25 bucks each
The PSU still is far to overkill, but it's on offer with the same price as the 650 version
550W plat should still work just fine with a 3700X and 2070 Super even with a bit of OC headroom on the GPU
Expected it to pull around 410W if both are running 100% on stock - finetuned settings likely would drop it to 360W
Sadly that 15$ more for the efficient plat unit - that's up to you if you can safe on electricity that way with a more efficient unit
TridentZ Neo 16-19-19 are Hynix Kits
Hard to find pure dual rank b-dies under this price range, for this size
soo the less stressing new micron kits are preferable right now - buyable as black, pure white or RGB
Board is about the least i would pick with X570 , but downgrading to B450 is tempting ~ just prices are still similar soo why not