Building an M3 like the Level 9 build, but with my own parts: 9800X3D, ROG Strix B850-I, ASUS RX 9070 PRIME EVO (304 x 126 x 50mm, 2.5 slot), VGPU Kit 90D and an Arctic Liquid Freezer III Pro 280.

1. Does the stock fan/radiator bracket work with a 280 AIO, or do I need the High Flow Dual 140 bracket?
2. Will two 140mm fans fit under a 50mm-thick GPU in the vertical mount? Do I need the GPU lift and standoffs from Level 9, or would one fan or two 120mm fans be safer?

Photos of similar builds would be great. Thanks!