Next in line is the one you're looking to cycle, try, or add to your staple if you love it. If you want to gain 20 pounds of muscle, you have to be patient, but I am sure you can reach your goals. It won't take 4 weeks though. Please take a look at X Factor. It is well known to increase significantly while reducing bodyfat. If you want to add another edge to this, you can add some Mass FX by Anabolic Xtreme, or by ALRI. Some logs have started to show up, and users report very good gains from the stack. Here's a link to a log:
Haiz's Mass FX + X-Factor Log
Here ya go! Please don't hesitate to contact me if you have any questions, and if you decide to go with this stack, don't forget that intake has to be limited during X Factor.