Well, you've done part of the hardest work already by writing out your notes/letters to family. I've made drafts, tried to write letters, but I end up getting so emotional, I have yet to complete any letters explaining to my family and few friends why I left, etc.
Do you live alone? Are there things you want to get rid of before you go? A couple of weeks ago I donated 2 garbage bags full of clothing to a charity in the state where I live; they actually came and picked up the clothes, all I had to do was leave them out on the porch, labeled. Then I rehomed my cat, which was heartbreaking (I posted about it here on SS).
Once I rehomed my cat, which was only a few days ago, it really started to sink in that I'm likely to hang myself or use the night night method soon, as in the next few days. I was avoiding calling my sister, who is super supportive, because I knew if I told her I rehomed my cat and started getting rid of things, yeah...those are the "red flags" of concern.
My psychiatrist and therapist are both aware I'm close to ending my life, and I'm instructed to of course call them if shit hits the fan. I've also attempted 3 times in the past so for me, this is a familiar struggle. My next therapy appointment is scheduled for Monday, and my psych appointment is on Tuesday. I'm torn between waiting, or holding on for those appointments, or ending it after I see my father this coming Sunday. If I hold on, I'll likely be hospitalized and from there, I don't know.
What I do know is, I won't continue "living" like this as it's not living. I did end up talking with my sister and she wants me to go inpatient today but I told her no, I'm waiting till I see the psychiatrist.
Anyway, this is YOUR decision and every human being has a right to die. I don't know what method you're going with, but I imagine you've given this a lot of thought and again, if this is what you choose, I only wish peace for you. You wrote your letters, and as others have mentioned, unless you have children or other dependents, it's less complicated to end your life when it's just you. Not saying it's easy at all, but as far as tying up loose ends...when it's just you, there isn't much else to tend to.