Great piece, Vincent!
Have had similar experiences with psychedelics and you do a wonderfully articulate job putting the trip into words. It really is beyond words; ineffable, but you give the context of the ego death, which is the most important thing.
Basically, I sum it up as leaving ONLY First person POV to zooming out into 3rd person POV and then the realization that you are NOT separated, that you (we!) are all connected, and this includes to the natural world beyond humanity.
Last, I love me some Watts and nothing better than a mid-trip dance party!!