Up to you man really, your body. I have used tren e once before and i have to say....you can literally see your body changing before your eyes when taking it lol. It dropped my BF% along with giving me incredible gains in muscle size and strength....a long with some anger issues haha. Nothing to bad, but i noticed my tolerance for dumb-asses went down.
Another thing to think about is tren cough. I got it 3 times....all 3 sucked, but it's not the end of the world. Read a little about that...it's not as bad as some make it out to be...but that doesn't mean it's not pretty friggin uncomfortable
AND ANOTHER THING to think about is sleep....tren can make you sleep a little less. I got about 5 hours of sleep a night. The not sleeping part sucks, but the good news is tren is so awesome you don't need a lot of sleep to see gains.
Ok, i think i'm done now, good luck.