fantastic post, this pretty much covers everything
duradel is an asshole but he's the best slayer master to use
the tasks i did from 80ish to 99 were:
dagannoths
kalphites
suqahs
jad
trolls (ice trolls in the jatizso area, you'll need a neitiznot shield for these)
dust devils
smoke devils
nechryaels
dark beasts and black dragons (babies) for points, before you can do dark beasts you could also do ankous or steel dragons (in the catacombs) for easy points.
cannoning black demons in taverly dungeon also isn't super terrible if you just want a nice chill afk task
this is sweaty neckbeard shit that doesn't matter at all but if you're interested using your cannonballs on the cannon is one tick faster than left clicking the cannon to reload it
also there's a setting in runelite that will mark the tiles of common cannon spots for you
out of all the crazy shit you've posted so far, this must be the most harmful. i know nobody reading this will take you seriously, as nobody in this thread has done so far, but just on the off chance anyone does please do not listen to any of this guy's opinions on mental illness/health, he's irreparably damaged his by sleeping 3 hours a day for months (which is much worse than shitting your pants one time btw)