Personally, I would. I am your age as well and debated using a test booster just for that extra edge. I eventually decided that it wouldn't be worth it in the long run. As somebody mentioned earlier, young chaps like ourselves have a decent test flow already and trying to boost it more can damage our system. As for the science behind this, i'm clueless. I've decided to wait until i'm about 23 to start on the natural test boosters. Depending on my results then I may wait even longer, just to be safe. Although, I think I remember reading that you are taking ZMAs as well? If not, I would start taking those before bed just to take a more passive approach to keeping your body in an anabolic environment. Beyond that, typical supplements (protein, pak, omega, storm/shock therapy) should suffice. If you do want to take it above and beyond without putting your test production at too much risk (forgive me if you are already taking these) I would suggest checking out Nitro or Pump. Neither touch on hormone modulation.
Just my 2 cents. Keep us updated.