Hard to say. For one, only you know how much you are suffering right now, and you are an adult capable of making your own decisions. But you are young, and i promise you your life is a gonna change a lot, because you will can get older and see how wild life is. But if your life is gonna change for better or for worse, only time can tell and no one can predict it. I know how you feel because i've started having suicidal thoughts since i was 16, and i am 25 now.
The thing is, i've experienced a lot of good stuff since then. A lot has happened, a lot has changed, i had lots of fun and lots of sad moments too. I decided to live my life to the fullest and i did. But i am still considering death, and sometimes i regret not doing it sooner.
If you are in doubt, then i'd wait. You still have all the time in the world to decide, and you shouldn't make that decision in a rush, because you can't go back once it's done. You can, however, live your life and see how things turn out, and revisit the plan of suicide when you feel more ready. Before suicide was my main goal, but now it's my plan B. Tho my case is different and i'm only sticking around because i don't wanna hurt my family more.
Anyways, you can always plan better. You have time to think about it, and only you can say when it's your time. I wish you luck and i hope you find clarity and peace.