At 60' in the Blue Hole you won't be past the lip, so will see nothing. You don't need to go down to the shelf at 145' to see what there is to see, though - 100' will do (if you can arrange for your own dive guide to accompany you that won't try and get you to dive to 145' on a single al80).
I disagree that it's an unsafe dive. It is potentially unsafe but the way it's accompanied it becomes safe. Certainly sub-optimal, but not in practice dangerous.
there, that is better.