I am not a doctor, but I will tell you I benefited from a five day suboxone detox. I do not take them currently, they were given to me in a partial hospital setting. I did not experience strong withdrawal symptoms and am opiate free today.
As far an the energy level you crave, you can achieve normal levels of energy. You may never get that "superhuman" feeling again but remember that is not normal. For you, it's lethal. You're already experiencing the rapid slide of addiction. How far do you want to go? Wanna lose you job? I did. Wanna nearly lose your home and family? I nearly did. Sold my car, you name it. And I was employed and making decent money.
This is a time for action on your part, not paralysis. Find an experienced doctor and get some help, now.
From one who knows where it goes,