You have a very good start

I'd say that you have all the good points covered.

My only criticism is that I think you shouldn't sound overly apologetic. The more you have to excuse, the more suspect that you look. It's good that you know the answers. But wait for the questions rather than trying to explain everything. You don't really even know what things he is going to ask you about, what it is that he considers more important or that he is more worried about. Don't try to do a speech unless that is what he asks (which remains a possibility, but is likely not the case).

But still, it's good that you covered so many good points.

I'd add that you also share a broad history of your relationship, or anecdotes which are meaningful to you, as appropriate to explain things by example and not just theory. Not on this board if they're too personally identifiable, of course, but surely with him.