As edge refinement increases cutting technique must also advance. The only problem is it takes years of paying close attention to master cutting technique let alone the ability to produce the edge. The edge has breath taking sharpness but its more a show of skill and ability of tools than a practical edge. Though that greatly depends on application.
The advantage of diamond compound is it does not slow down and works extremely fast. In your case it would be used just to remove the burr, 1 micron is far too fine to polish the edge after a EF hone. But.... I personally have stopped using compounded strops, I have started using a barber strop and like it much better.
Adding on for increased sharpness you could go several directions but I would probably add the Naniwa aotoshi green brick + kitayama 8k. I would hold off on that for a while though, build your skill with the diamonds and work at getting sharpness at lower grits before shooting for the stars.