Woah... you have an 11 and a 5 year old?
If you do this you will completely fuck their lives up. You will be inflicting upon them the single most traumatic even in their lives. This is incredibly selfish, and I think you are probably not considering just how it will effect them. If you want to do what you want to do when the are adults, that is on you. I think everyone should be able to make an informed choice about their own lives, but I also won't hesitate to say that I think it is incredibly fucked ip to leave a spouse, and children behind, if you're not terminally ill or have a mental illness, disability, or any other problem why you cannot reasonably be here for them. They didn't ask to get born, your spouse didn't sign up to become a widow so early in life. You will be fucking them up so hard, and I know this from experience. I am only here and suicidal because of my spouse committing suicide, so unless that is what you want, then you will wait and discuss this at length with them. The worst thing you could do is just go and not tell anybody, not even giving them a chance to tell you how they feel about it. Because they are the ones who are going to have to live with it, you will be dead, non existing. If you have no terminal illness, no trauma, no reason to actually want to end your life except vague reasons about Buddhism, then you are an ass. You will be hurting innocent people who did not ask to be hurt, and don't fool yourself into thinking they will be alright. They won't be. At least one of those three will probably follow in your footsteps and commit suicide, and not because of a terminal illness or anything but because they can't live with the trauma that you inflicted on them.