I don't quite know about growth hormones and their side effects, you said you have done the research for the past month, so you probably know about that. From my experience though, that is a tricky path you are taking, since you would have to deal with all the bull products out there. Even more so, what I've gathered over the years when it comes to attaining a physical aspect, anything that provides a faster means of achieving it is never any good for you long term. Whether it's penis enlargement, low cal dieting, stacking up on roids, etc.
It is your choice of course however, but why not try to get bigger the real way, working out. There is no real reason for you to get bigger quicker within a limited amount of time is there, other then that you don't want to spend the time and hard work. If you ever did attempt to work out, and your response to this last comment of mine is "I've tried it already, or I've tried everything, etc", chances are, no, you have not.
Good luck with your decision. Hope you don't regret it in the end. I would say it is not worth it.
