Question is 10400f + 3060 a good idea?

Some cost cutters and/or changes to look at. (CM Black Edition is an upgrade from the classic EVO).
Cooler Master Hyper 212 Black Edition CPU Air Cooler $39.99
Crucial Ballistix 3200 MHz DDR4 DRAM Desktop Memory Kit 16GB (8GBx2) CL16 BL2K8G32C16U4B $76.99

or ...
G.SKILL Aegis 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 3200 (PC4 25600) Intel XMP 2.0 Memory Kit Model F4-3200C16D-16GIS $74.99
Mushkin Enhanced RAW Series 2.5" 1TB SATA III 3D TLC Internal SSD MKNSSDRW1TB $81.99

550w is what's recommended for the 3060.
Seasonic CORE GM-550, 550W 80+ Gold, Semi-Modular, Fan Control in Silent and Cooling Mode $79.99

NVIDIA GeForce RTX 3060 $329.00 (RTX 3060 Coming Late February)
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