It takes a long time to learn how much you need at different AAS dosage levels. You should only take enough to keep you estrogen levels low enough to prevent gyno.
I'm currently taking a combo of Aromasin, Tamoxifen and Bromocriptine - each at a low dose. 10mg of Tamoxifen M,W,F allows me to lower my Aromasin dose and let my estrogen stay higher than I could normally tolerate, which keeps the gains coming.