I was in that same boat, but KGP made this possible for me (at one point), and so many people as well. Ever since he retired from doing this a couple of years ago, everybody else here (who have the same coding experience), have been extremely helpful! I couldn't ask for a better group of people!
Here's what I will say (and this is just my opinion), with all the motherboards out there, the one that has worked for me (when it comes to the X299 type motherboards), is the Asus Prime X299-DELUXE (along with the Asus Prime X299-DELUXE II and a couple of other motherboards). The GPU you're using (so far that I know), is still great and doesn't need to be upgraded. So you should be good there.
So with all that said, you may look into getting the Asus Prime X299-DELUXE (new or used), on eBay. djlild7hina, djbuddha (and a few others on here), were easily able to help me with my existing EFI folder and make the necessary tweaks on my existing files to make things work more efficiently. Start ups are faster and I'm able to use 3 x 32" 4K monitors running on one 6900XT GPU. I'm still impressed by the production speeds when using apps like Photoshop, Premiere Pro and so on.
I'm currently using macOS v12.3.1 and will updating today to macOS v12.4. I think (from what I'm reading with what djbuddha said), I'll see what happens with using iStat after the upgrade and if I go through the same minor issue he's going through. But with that said, I'm very impressed and grateful for having this system work the way it does. So much so, that I have a backup system using the very same motherboard and same GPU. I couldn't have done this without the support of all these people here on this post! Hope with what I shared helps.