hi guys I need some help with my forst cycle and I appriciate all the answers I can get!!!

I have now 10 systanons each 250ml
and 7 deca each 200ml

my questions is, should I combine those two steriods toghether or should the systas first and the decas or the other way around??
If I combine them should I inject them them I the same buttock or seperate??
and should take one each week or both every week?? I need as much help as I can get!!!

also I got ephedrin pill each 50mg...are they good to mix the steroids ? or should I wait until after the cycle??