You're young enough that you could probably continue to grow naturally with no problem. You're at a much higher level than many others who have posted on here looking to experiment with a first cycle, so you'd be fine if you want to go that route. Do a quick search for a couple of threads: Steroids for Dummies and Steroid Newbie Cycle Planning.
Also, check out a thread by a member named KSMan. It's called "The SERM Dosing in this forum is wrong" (Pretty much you should run Nolva at 20/20/20/20)
If you're going to do it, the recommendation by almost everyone here is to see how your body reacts to synthetic Testosterone before combining other compounds. Basically a 500mg/week cycle of Test only.
Should you choose to go this route, do as much research as you can for each question, post what you've learned from searching. You'll get better treatment and better information.