One Cycle

Hey, I'm 6' 185lbs, around 15 or 16% body fat. I'm 19 years old, which makes most people tell me i'm too young for a cycle. I started working out with weights 4 years ago, and ever been getting over more serious with them. Weight has always been a struggle with me, i've lost a good deal of fat in the past few years, but now i'm starting to really try to lose more with diet and exercise, and the results are painfully slow. (about 6 pounds in the last 3 and a half months) I wanted to do one 6 or 8 week cycle, simply using test, and possibly winstrol for the last 3 or 4 weeks, with nolva 4 weeks following. I would like to use it just to get ahead, and then simply try to keep my gains, and continue working out naturally. How much harm would one 6 or 8 weeks cycle be for me? From what i've seen the rewards outweight the risks.