Whatever dose you decide on and what works for you but remember..Aromasin has to be taken every day.
It has a real short half life.
Thats one reason why most people prefer to take arimadex ON cycle because it can be dosed every other day.
What I do and a lot of people prefer doing is use arimadex ON cycle.
Save you'r aromasin for PCT because it's a suicidal to estrogen and will help prevent estrogen rebound.
Take it along with you'r clomid in PCT and you will be golden.