I wouldnt suggest winstrol for a mass gaining cycle. "Lean" mass is all about diet, not drugs. You can gain just as much lean mass on test and deca or test and EQ or Tezst and dbol, if not MORE on one of those cycles, than with test and winstrol. Winny and the other DHT's, are hardening agents. They are great for drying you out and giving a more conditioned look to the muscle, but this is all cosmetic and not really a reflection of the actual gains you have made. With the water removed, the muscle looks harder but once you come off of it, it will go back to the way it was. 

If you want to make lean gains, you need to have the diet dialed in. Get enough protein, then play with the carbs and fats. Keep your food sources cleaner if your body requres you too, to make progress while staying lean. If you are over fat, you might want to consider directing your meal plan in more of the direction of fat loss, keeping as much food in the diet as you can, while still losing body fat.