unless you are using an actual therapeutic dosage of test you should always use an AI
and 'how much should i use' is a question that nobody can answer. everyone is different. what if your gear is underdosed? overdosed? what if your AI is dosed off? your body reacts different. the only way to know for sure is BLOOD WORK. see my signature. run blood work 3 weeks into the cycle.. if your E is too high then up the AI and vice versa