From the top portion I'd layer at your lower blue ring this year, bend up that low branch and shape for the future leader, air layer the upper portions next year... if you want more material?
@misfit11 have you had success with thread grafting roots? I've only tried one and failed but I also haven't seriously attempted approach grafting the roots either. I've got a few that will need it in the coming years. It seems when I thread graft a branch the exit side swells and grafts...
Groundlayer is easier than air imo, I'd certainly go that route vs attempting a bunch of grafts
Here's where I documented one.
Thread 'Hacks Sharp's Pygmy A.P. Progression' https://www.bonsainut.com/threads/hacks-sharps-pygmy-a-p-progression.61894/