I am 54 years old, have always been serious about weightlifting and have been doing it on and off for 20 years. I have been steadily lifting since the first of this year and have firmed up quite a bit but want to go to the next level. I donated a kidney about three years ago and am interested in starting a cycle. My son recently started a cycle and he is very happy with the beginning stages. I weigh 205 on a 6'1" frame and probably have about 20 percent body fat. I'd like to increase muscle mass and trim my bf. Would going on a cycle be too dangerous for me? If not, what would be a suggested stack? Thanks.