What you have is a heap of $$ tied up in ram that's only halfway usable, and not for your intentions. The wife agrees.
The bad part being that even with all that cost, it's going to cost a whole lot more to actually get to use it for your intentions. Which I'll assume (personal experience) the wife won't be happy at all with.
So. Obvious answer that'll make everyone happy is to sell all your current ram. I'd split it up every which way, sell 2x sticks or 4x sticks, someone will be happy with 32Gb or 64Gb at a reduced price from brand new.
Use the proceeds to get 1 kit of 4x32Gb and a 5900x/5950x on an x570 mobo. Then take the wife out to dinner. It's a win-win situation.
You clear off the shelf. She's happy.
You put the cash to good...