Tren is quicker to attach to androgen receptors than test. Therefore any amount of test over tren will literally be wasted. Lowering test below tren will lower sides as well. On the flipside to this trick, if you stack deca with test...because deca is slower to attach to AR than test, you lower the deca dose below test. (There's like 9 threads on page 1 that explain this). You could just blast, but tren is mean, it will shut you down hard, it is one of the most anabolic/androgenic compound out there. I wouldn't advise not using Human Chorionic Gonadotropin (HCG) on-cycle...but if you must (due to supply) blast it. Money shouldn't be an issue when running gear tho.