If you call it "serious", I would definitelly add more TEST!
TEST is the main thing, always!
At least 100 mg ED.
Of course I do not know how many cycles have you done so far, how much you weight, etc... But if you call it "serious" stack, then you should be taking more test.
Optimum test income is 1000 mg per week. This is the dose, where are maximum anabolic effects with same side effects like from 400 or 600 mg per week.
Jan