I'm unfamiliar with the method you're referring to, but hopefully someone will be. Maybe throw up a second forum post requesting advice for it in the title, might draw more experienced attention.
Regardless, I hope that it goes well and works. Jumping is often a messy case, and honestly a 5 floor fall is scarily survivable. You don't want to fail either method, so if neither end up looking fullproof please consider a different option. Plenty of guides and choices on this forum, so browse to your hearts content(or malcontent lmao).
I hope it goes well. I'm sorry for whatever pain you have and are going through. This world is more than a bitch, and the suffering caused in this world is nothing but abhorrent. Go quickly and painlessly, you deserve it <3. If you're gone by tomorrow or whenever you decide then farewell soldier. May there be peace at long last.