Further, in the event of a double engine failure, you do not commit to an approach until you know you can complete the approach, and have a landing clearance.
Exactly!
I would add that you declare an emergency and inform the tower that under no circumstances can you possibly go around.
The way things are at the busy airports in the U.S. these days, I would probably add, "We are landing no matter what, so I trust you will help us achieve that objective safely."
