People are going to give you widely-opposing opinions, so it all comes down to preference... yes, tr-en has its sides, but what doesn't? Some people experience them, others don't. Tr-en ace is best to start on your first tr-en cycle, so it clears faster from your system in case you do get severe sides...and since you're poking either ED or EOD (again, choice is yours), it's best to stack with pr-op. Tr-en is potent, you can stand to make decent gains with less than 50mg ED, but 50mg seems to be a nice average dosage...along with 50-100mg pr-op. You probalby shouldn't run it for much longer than 6 weeks (8 weeks max in most cases), as I said, it's a potent androgen. As for cabaser.... I once thought it wasn't necessary... until after my 3rd tr-en cycle that I got a lump (and I know for sure it was from the tr-en)...so now I wouldn't run it without cabaser.... so you could have it on-hand until you feel you need it.