I don't see shots that way. I honestly don't even think about angles in that way. My one roadmap is the line from the OB to the pocket, and that gives me all the information I know. To set myself up for the next shot, the CB should be on the opposite side of the OB line that my CB destination is. Then depending on the distance the CB has to travel will determine how thin or thick I want to hit the OB. Otherwise, I'll have to force the CB to the next position, and it's usually when I try to stroke the CB that I get the pocket jiggles.
That's how Ive done it for years. Still do, but wanted an easier, less time consuming way for newer players to learn the skill of pocketing balls. Then they can focus on CB control/shapes.