I wrote the following reply in another thread similar to this:
First, in this sport, the true gauge of knowledge is results one has obtained. From your stats, you do not have the knowledge nor experience to maintain whatever gains you will make on steroids.
Second, you will NOT gain actual muscle tissue close to your genetic limit on steroids. This is NONSENSE. When someone inexperienced gains 30lbs, most of it is water retention and muscular fluid, especially if he's not controlling his estrogen levels. This is why noobs who use look sloppy and bloated and seem to deflate after their cycles. Then you realise they gained a minimal amount of actual muscle and have put on a lot of fat when the excess intramuscular fluid has dissipated because they drastically increased their caloric intake upon the excitement of being on a cycle. If you are inexperienced, this will happen to you.
Third, there is the risk of permanent damage to your endocrine system. This is genetic and a proper PCT will not prevent this. Why would you risk it for 1 cycle when you can make the same amount of gains easily over a relatively short period of time at your level?