I am stacking deca and cpyionate is that a good stack? I started the deca three weeks ago at 300mg a week I just started the cypionate Monday at 200mg a week. This is my first cycle ever I am 26 years old and weight 148 lbs and I am 5 9 in height. And I am about 5% body fat. I am doing this stack to try to gain mass and straight. What should I be taking with this stack and how long should I do it? I was planning on just five weeks. Please let me know what to do.