If you flew 3 degrees from the FAF at 1700 feet, you will not get to the 420 ft MDA before the MAP. You would reach HAMAX (MAP) at 745 ft.
If you want to increase your chances of getting visual, you have to go below the 3 degree profile to get to 420ft and fly level to the MAP or continue visually.
Hence the mention of a ‘cloud break’ procedure. Not ideal, but it’s there.