I'd wait a few years. Do research, no rush! TBol is good you would have results, but I don't think u would keep much of it if any. you wanna run injectable test with any and every cycle. Are you aware that some people cant get an erection after a cycle while on pct? are you also aware that at 24 your test levels should still be high and with a good diet high in quality calories and protein you should make good gains that you'll keep? IMO unless your willing to do your homework and stick a needle in your leg or arm or butt your wasting your time.