How long have you been training?
AAS is not advisable for someone as young as yourself -
http://forums.steroid.com/anabolic-s...-steroids.html
3rd cycle and you're only 150lbs @ 6ft? No offense but you are failing miserably at eating enough and or training properly.
Your age and height, you get your nutrition and your training on point and you could easily hit 190-210lbs naturally in my opinion.
I would head over to the nutrition section and post up what you eat in a day, you will get great advise there.
For learning how to train properly, I would head over to the Lounge and read Marcus's diary from the beginning.
Best regards,
Drew