As I told before you can't kill yourself only with benzos, they are a way to force you to fall asleep to avoid pain or anxiety caused by the main method to die. Benzos are relatively easy to obtain, usually if you go to the doctor and tells him you have insomnia and anxiety he give you easily a prescription of benzos as the normal way to treat these things. Alprazolam is fast action and used to treat panic attacks, Lorazepam or Diazepam are not so fast action but more long lasting effects (specially Diazepam) and used to treat anxiety in a sustained way. All benzo can knock you if you take pills enough and put you to sleep deeply. There´s big info online about how much quantity of pills are needed to black out you, depending on what benzo you are using or what another med you are mixing the benzos.
Nembutal is the Holy Grail of suicide methods but I don't know any trusty vendor in Europe, so my plan is Amitriptyline cocktail. I have big quantity of benzos, I have too the cimetidine and the metoclopramide, but I need to buy the main component: Amitriptyline. If some one knows a trusty online pharma to buy I will appreciate very much to know the info.