PC Upgrade - What's best?

Hi everyone!
Unfortunately (cause of market conditions) it's time for a pc upgrade.

My current workflow spaces almost in any 3D sub-category, from modeling to shading/lighting, from rigging to animating, from simulations to (GPU) rendering.
I mainly use Blender and some C4D (both for full 3D workflows, with GPU rendering), but in a month time I'll (hopefully) start dabbling in Houdini.
These are the specs I want to upgrade to, with relative concerns:

Motherboard: MSI MAG X870E TOMAHAWK, I've read good things about it but if you have alternatives I'm all ears
CPU: AMD Ryzen 9 9950X3D (but I've heard the 9950X is basically the same in this scenario and that I won't need the extra cache, can anyone confirm? It's almost 200 bucks cheaper where I live)
RAM: 128GB (2x64GB) Crucial Pro DDR5 5600MHz CL46 (I know CL46 is not great but this is the only second-hand-still-sealed under 1000 bucks RAM I've found in this crazy market; I really didn't want to spend 1000+ bucks for RAM, much less drop 2 grand on some CL34 modules)
GPU: as much as I want a 5090, I'd probably stick with a 5080 or even a 4090, hoping for some upgrade room in the future. What's your opinion on this?
PSU: MSI MEG Ai1300P, 1300W 80+ Platinum. I've checked a bunch of calculators and I should be safe even in the unlikely event that I buy a 5090
SSD: at least 1x2TB Gen5 NVMe, I was thinking either a WD SN8100 or a Samsung 9100 Pro. What would be your choice here?
CPU cooler: I'd go with a TR Phantom Spirit 120SE, I've seen only praises about it.
Case: still looking, but the Fractal Design North caught my eye the other day. Any reccomendations about this or another case?

Along with a few fans I already have, this would be my configuration. My budget is flexible but not that much, I know CPUs like the Threadripper series are better for simulations but they come with extra costs on all the line (and I'm not sure I want to spend that much right now).

What do you guys say? Will this config work properly in blender + c4d + houdini?