Stay away from T3 unless you're using testosterone. T3 will cause significant muscle loss.
Clen is great, if you are already decently lean. If you have 30 pounds to lose, then get your diet in check because clen will do nothing for you besides give you undesireable side effects.
Your main source for building muscle and dropping fat all comes down to diet. Steroids and pharmaceuticals are merely supplements, and are only effective if you have your diet nailed.
Learn to eat, ace134. It is the key to physique success.