I would do 50 mg a day of S4. Historically that's been the most popular amount to take. You're not going to be able to stop the side effects until you stop.
Primo is one of those steroids where some people just don't see the value in it. It's very expensive for the price. I would switch to Equipoise to be honest.
Superdrol is a very toxic oral steroid. I would not run it for more than three or four weeks. You can do 10 to 20 mg a day and you'll get perfect results.