Thank you, this has been a huge help and a lot of knowledge!

Unfortunately, I made the 4-hour journey (twice...) to MicroCenter, so I will be keeping the 7900x/RAM combo, although everything is still unopened. I do not think I will be pushing it to 100% if ever, other than initial stress testing.. I hope?! Glad to hear on the AIO, was going to continue an all-white theme with other considerations being NZXT Kraken X53 or DeepCool LS520. I have no experience with any AIO aside from Corsair, but am certainly up for swapping fans if needed.

I think I have the standoff mods saved from Amazon, if not I know they are around here and I will do both, thank you! Yes, 4090FE would be the second choice because damn do I love the look/size of the Reference 7900XTX, hope they get their vapor chamber/temps sorted because I do not have a need for NVidia either, going for the long haul of whichever will last me.

Sounds like all the other add ons are as needed, regarding rear fans for the exhaust and feet. Thanks again, first time back to AMD, iTX cost is painful but space-saving/portable goodness if needed (and ideally a four or five-year new drop in CPU) is what I am here for. Hoping the Mobo/Cooler work accordingly and appreciate the insight!