1. clen is for burning fat, not gaining muscle
2. not advisable. clen raises heart rate and blood pressure. no need to amplify to dangerous levels.
3. yes they are
4. http://www.steroid.com/Testosterone-Enanthate.php or
http://www.steroid.com/Testosterone-Cypionate.php
Im sorry, but you can build more muscle without steroids. You are doing something wrong. I was somewhat near your stats awhile ago and got up just over 200 lbs in 2 years. Just eating, protein powders and dedication to the gym.