I wouldn’t do it that way, my uncle did it that way and it was wrong. Also I wouldn’t put them through the prolong suffering of the extended illness. Lastly the event and afterwards would be paid in full no lingering funeral cost.
Nice and neat. No muss, no fuss, and nobody has to give a damn whether you ever lived or died. And don’t worry about anyone who might be stupid enough to be hurt by what they perceive as a loss. If they’re so low that they think the likes of you could have been an actual improvement in their life, their feelings aren’t worth considering anyway.