You are a million miles away from being at the level for insulin use. You are putting the cart before the horse. You need your training and diet dialed in more than anything, and expensive experience as an advanced user anabolics before ever even thinking about insulin. Do it now and you are in for a rude awakening. You dont just take it and get big. Thats not how it works. You'll end up just a fatter version of your current self without getting all your ducks in a row first