I'd do what Schmoe Buster did 8 weeks ON, 4 weeks OFF. BTW: why are you taking cortisone along with this cycle? If it's for joints i understand, but if it's just for water and weight gain, those amounts of dianabol and winstrol should be more than plenty + Are you using anything for estrogen control?
PS. I don't like any cortisone products, they make me anxious and actually drop weight on me.