21? Too young to even be starting AAS, but certainly too young to be experimenting with how much you can manage, especially something like 100 mg Tren ED. You are getting a lot of short foresight, go for it kid, kind of advice.
My advice is, first, workout hard & skip the AAS until you're 25. You won't do that, so my second advice, is find a pattern you like, say 500 mg/wk of Test with maybe EQ, and stick with it until you know it well. Third, CYCLE, that means coming off all supplements until your testosterone levels have returned to normal (probably leaving only two long or three short AAS cycles per year). Fourth, like others have said, impulsive guys like you've described yourself should be especially careful with using potent substances like Tren. You can't predict how you'll react. Start with Tren ace at a low dose like 100 mg 3x EW. Stick with that for six weeks. Last: You've got your whole life before you. Plan for a long, healthy run with slow, steady upgrades. No need to shut yourself down permanently too young and putting those vital organs under unnecessary stress.
Respects,
Solo