My best guess is that, in 10 years, bitcoin might be around it's absolute peak of 30K
I would be fine with that in 10 years, but I don't see why the peak would be so soon. There's no reason for it to stop growing so soon.
I assume that should Bitcoin succeed and live to see another 10 years, it will simply keep growing indefinitely alone due to the fact that governmental fiat currencies will keep depreciating. At least until a better asset class comes along. Question being how much of said growth we'll see in our lifetime.