I'm new here, does N stand for Nitrogen? Whatever your method, taking too many benzos could help or hurt your performance. It could calm away the anxiety fueling you to do end things, it could make you sleepy and more accident prone, it could help make your passing easier, or have some other negative effect. I've been avoiding taking my benzos, largely because it's my anxiety about future pain that's motivating me to get this done, and i know that I need to get this done. If by "N", you meant Sodium Nitrite, I'm pretty sure there are many guides here with dosing instructions.
btw, your title has an unfortunate autocorrect correction that may not get you the replies you're looking for