My build is based off the advice in the M&M NR200 series: on youtube
Since you have a FE card with the 'flow through' fan design, I think you'd get some benefit out of assisted intake from bottom fans.
To get a noise reduction, you'd probably have to set up a fan curve for the GPU in afterburner and the intakes using FanControl or similar.
For my own build, I've always had a deshroud on my GPUs, so I don't really have a comparison for temp/noise.
My 3080 games around 65C with decent noise (though inaudible with earbuds in).