Use 300mg every 4th day like StoneCold said. You could also use Proviron@50mgs ED throughout to keep you dry, but Liquidex is cheaper. At your size you should be taking in at least 4,500-5,000 calories and 400 grams of protein a day. Use Pullinbig's program and get adequate rest. You should easily hit 20-25lbs with this cycle. It's really all you need to grow right now.