4 months is the shortest time I would use GH, if you can use it longer, I would use it for 6 months. There are small effects that you will see within shorter time frames but the longer you use it the better. If you want to focus on lean gains, instead of dbol or Tbol, how about primo? 300-400mg along with 400-500 test will produce some nice keepable gains without a lot of water. This is good for adding muscle and for dieting down. Very anabolic. You could use the EQ or leave it out.