Question about the difficulty of a couple of airplane maneuvers
A runway at a decent size commercial airport is ~200' wide and 10,000` long, which is about 2 million square feet or 45 acres, most of this is for roll out can pilots generally have no issue touching down in the first 1000 feet which covers an area just under 4.6 acres.
So its safe to say that a pilot can maneuver a plane from 6800 feet down to a landmass of 34 acres.
A turn of that as described could be achieved with a ~30 degree bank, that decent rate is fast but not unachievable.
Aggressive decent rates like this would likely not be possible in a 757 but low and fast is not out of the question for some planes

Any airline pilot (fresh in or about to retire) should be able to pull off the first two maneuvers with out an issue . A decent CFI would likely be able to coach someone threw these maneuvers if they were just starting out. As for the last maneuver, your gonna need a G Suit....