20 weeks is a long first cycle. A big part of understanding how you respond, is understanding how you recover. The longer you are on, the more work it will be to recover. Instead of thinking about what other drugs to take, think about what you can do to get the most out of what you are taking. At 5 wks in, this cycle is just getting good. If you aren't up in weight dramatically, look at your diet and training. You should be sailing now. Get the most out of what you are doing and learn from this expereince. Stick with maybe 12 wks for this one, then come off and run your PCT. You have a solid grasp on how to do PCT and how to use HCG. Good work on that! See how this goes and learn how to hold your gains as you come off and recover. Then for the next cycle, EQ would be a solid idea. Honestly, you should be able to grow again just as good with the same cycle, 12 wks of test only at 500mg. But if you wanted to use EQ, I would at least wait to cycle 2. If that is what you do, I would use 500mg test and 400mg EQ for 16 wks. I would bust your but in the gym and with that diet and earn every ounce of muscle you can. Believe me, that if you work as hard as you can, you can do really great things on this first cycle. Then with the knowledge you have, you will be able to do even more on the second one. There is still so much to learn right now and that is going to take expereince, Plus your body is very sensitive to AAS, so stick with the plan and learn everything you can about your body. You wil be glad you gave yourself the room to increase later. and it will pay off in the long run. Too manyguys new to gear are just adding more and more gear to get the results. Of course, more gear will give you better gains, but eventually that stops working. Get the most out of the least and you will always have room to increase on the next cycle. "Save those good cards" and play an ace when you need it!!