I'm struggling to get to level 8, level 9+ is somewhere in the stratosphere lol I may work out my future progressions and edit my post

Here's the edit, I suspect things are slowing down but on current average by late Sept I'll reach level 8 but it'll probably be more likely sometime in Oct.

As for level 9 - On current average that would be July next year and level 10......so again at the current rate that will be in Feb 2033.

I'll certainly be older but not necessarily wiser lol

You'll have to tell us all what the rarefied air is like at that altitude