There's no N anywhere. Even if you find it, it's going to be hella expensive. Probably upwards of $5,000, maybe $20,000 for a sufficient dose of 10G.
SN is actually pretty difficult to get hold of itself, unless you know which website is the DMC on here. I don't yet. It took me a month to get it figured out. I have multiple batches, and one called at technical grade 99%, still not sure if that's even the right kind. But it's 99%.
Anyway, as for methods, hanging is the most lethal, imo, and the easiest to pull off. It's just not going to be comfortable and will be a bit scary. There's a technique where if you have a solid anchor, you can lean forward, you'll feel fine, then you lean backward to a normal standing position and literally just pass out, then the rest is history. I'd like that method, though you need a strong anchor.
For me, I'm considering doing a double down. I'll combine sn with hanging. I may throw sa in there too if I can find it. I have a couple possibilities there.
I may also use my firearm, but I'm really concerned about doing permanent damage and surviving there. I figure doubling up will maximize my chances. But I'm not sure on the logistics of mixing sn and hanging. If I could set up some time release thing in a chair that would pull it away after a specific amount of time, when the sn+benzos had already knocked me out, but I'm not sure how I would swing that. Lol, no pun intended.