What is your current Rig not doing that you need/want? Or is just money burning a hole in your pocket?
Now is a terrible time, but I don't know when things will get better.
You could do something in between.........
If you have to have an upgrade, you could get an i7-10700K and new MB for under 500 at microcenter. 10700k has double the passmark score of your current CPU. Reuse all your other parts. (or comparable AMD chip, 3800x?).
Then I would turn around and sell your 7700k/MB to help recoup some costs.