That Steroids for Fighers articles is bunk and totally ridiculous.
MMA is a multi-disciplinary sport which requires various facets of athletic and technical abilities.
What steroid you use and how much of it will depend entirely on your goals and weaknesses you are working on. Someone looking to gain muscles mass, increase strength, help recover an injury, change body composition, increase work capacity etc... will have totally different needs.
I suggest you carefully outline your goals in the sport and then figure out which steroids are best suited to achieving those goals.