I'm sure you're a great guy who thinks that streroids are going to make you big quickly and that they are the answer to fast results. You're making a mistake.
You don't have the mature muscle to build on. So whatever muscle you gain from that cycle will be gone a few months after you stop. You're 19. That means you're probably still growing, height wise. That will stop when you do that cycle. You'll close your growth plates and you're growth for life is over.
You need to read more about what you're doing and train a couple more years. And pay attention to your vocab words in school. It's Diesel