Seems about right though why an 18" cracker bar to tighten up the screws on the Disc ??
Worth cracking the wheel nuts before lifting the car..even if you have an air gun.
If cleaning up with a wire brush, watch you don't damage the dust seal on the piston.
Taking the resevoir cap off is good practice on any car, as is putting some rag around and under incase of overflow. And not dripping brake fluid on paintwork as it can be a good paint stripper.
The screws that hold the disc often sieze. Penetrating
and a tap with a hammer often loosens them
Working with only a jack supporting isn't clever though we all do it at times
I was told many years ago to put the wheel you take off under the sill..just in case. It's out of the way and may save the car or your foot.
Worth removing the slide bolts, checking the gaiters and re-greasing with silicon grease while you have everything open.
Enjoy and please post feedback.
If you get stuck.. ask