its a good stack, i would run 1000mg/week of primo w/ 700mg/week of winni. No need for ai because primo doesnt aromatize and winni basically boosts test so pct wont be an issue. primobolan isnt toxic to the liver so theres no real need for liv support. Its a really solid cycle. you will get super ripped and maintain hard dense muscle even after the cycle is over. Lots of pro athletes use this combo. if you want to really get shredded, throwing a little tren in there would help also